Caterina Scarpellini – astronomer and meteorologist

Female ‘assistant’ remembered for her important discoveries

Caterina Scarpellini moved to work at
Campidoglio Observatory aged 18

The astronomer Caterina Scarpellini, who discovered a comet in 1854 and was later awarded a medal by the Italian government for her contribution to the understanding of astronomy and other areas of science, died on this day in 1873 in Rome.

Caterina had moved from her native Foligno in Umbria to Rome at the age of 18 to work as an assistant to her uncle, Abbe Feliciano Scarpellini, who was the director of the Roman Campidoglio Observatory. He had been appointed in 1816 by Pope Pius VI to a new chair of sacred physics in the Roman College of the Campidoglio, marking a turning point in the attitude of the Roman Catholic Church to science.

From 1847 onwards, Caterina edited Corrispondenza Scientifica in Rome, a bulletin publishing scientific discoveries. She carried out her observations six times a day and reported on her findings.

The observatory was part of the Palazzo Senatorio on
Piazza del Campidoglio in the centre of Rome

She married Erasmo Fabri, who was also an assistant at the observatory, and together they established a meteorological station in Rome in 1856.

Caterina published reports of her astronomical observations and meteorological measurements in Italian, French and Belgian journals and also wrote about electrical, magnetic and geological phenomena.

Along with another scientist, she reported on a chemical analysis of sand that had fallen in Rome over three nights in February 1864, which she discovered had blown there from the Sahara desert during a storm.

She compiled the first Italian meteor catalogue and was the only observer in Rome of the 1866 Leonid meteor shower.

Caterina Scarpellini, here depicted in a magazine
illustration, made many important scientific findings

Caterina also wrote about Saturn’s rings, her ideas about the formation of the planets and her hypotheses concerning celestial mechanics.

She became a member of the Accademia dei Georgofili in Florence, an historic institution promoting scientific and agricultural research.

Her writings on the influence of the moon on earthquakes brought her honours from the Moscow Imperial Society of Naturalists and the Viennese Royal Geological Institute.

After Caterina’s death at the age of 65 following a stroke, a statue of her was erected in the Campo Verano cemetery in Rome. A crater on the planet Venus has been named after her.

The Palazzo Orfini in Foligno, where a printing shop
opened in 1470, printing Dante's Divine Comedy

Travel tip:

Foligno, where Caterina Scarpellini was born in 1808, is an ancient town in the province of Perugia in Umbria, situated 40km (25 miles) south east of Perugia. It has suffered several major earthquakes, including one as recently as 1997, but still standing are the 13th century Palazzo Communale and the Renaissance-style Palazzo Orfini, where a printing shop opened in 1470 and Dante’s Divine Comedy was printed there in 1472, becoming the first book to be printed in the Italian language.

The present-day Rome Observatory is in Villa di
Parco Mellini, at the top of Monte Mario

Travel tip:

The Campidoglio Observatory in Rome, where Caterina worked as assistant to her uncle, was located in the eastern tower of the Palazzo Senatorio in Piazza del Campidoglio on the top of Capitoline Hill. The observatory was later acquired by the Italian state and its equipment was transferred to the Villa di Parco Mellini at the top of Monte Mario outside Rome, which is still the location of the Astronomical Observatory of Rome and an Astronomical Museum housing an important collection of historic astronomical instruments.



More reading:

How 18th century scientist Laura Bassi broke new ground for women

Margherita Hack and the popularising of science

Why Giovanni Schiaparelli believed there were canals on Mars

Also on this day:

1907: The birth of writer Alberto Moravia

1913: The birth of film music composer Mario Nascimbene

1977: The birth of World Cup hero Fabio Grosso


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Galileo demonstrates potential of telescope

Scientist unveiled new instrument to Doge of Venice

How the Milanese artist Giuseppe Bertini imagined the
scene as Galileo demonstrated his telescope to the Doge

The scientist and inventor Galileo Galilei demonstrated the wonders of the telescope to an audience of Venetian lawmakers on this day in 1609.

The 90th Doge, Leonardo Donato, and other members of the Venetian senate accompanied Galileo to the top of the campanile of St Mark’s Basilica, where each took it in turn to look through the instrument.

The meeting had been arranged by Galileo’s friend, Paolo Sarpi, who was a scientist, lawyer and statesman employed by the Venetian government. The two were both professors at the University of Padua.

Galileo, whose knowledge of the universe led him to be called the ‘father of observational astronomy’, was for many years wrongly credited with the invention of the telescope when in fact the first to apply for a patent for the device was a Dutch eyeglass maker named Hans Lippershey.

However, Galileo’s work using uncertain details of Lippershey’s design certainly took the idea to a different level.

Like Galileo, Paolo Sarpi was a professor
at the University of Padua

Whereas Lippershey’s device magnified objects by about three times, Galileo eventually produced a telescope with a magnification factor of 30.

The one he demonstrated on August 25, 1609, is thought to have had a factor of about eight or nine.

Galileo was the first to realise the potential of the telescope for astronomical study.

He was able to make out mountains and craters on the moon, as well as a ribbon of diffuse light arching across the sky — the Milky Way.  Galileo also discovered the rings of Saturn, sunspots and four of Jupiter's moons.

It was his findings on Jupiter’s moons in January 1610 that would lead him indirectly into trouble with the Roman Inquisition over his belief in heliocentrism, the concept that the sun and not the Earth was the centre of the solar system, as had been theorised by the Polish scientist Nicolaus Copernicus in the previous century.

In observing the three objects in proximity to the planet Jupiter that he had originally thought to be distant stars, he noticed that their position relative to the planet changed in a way that would have been inexplicable if they had really been fixed stars.

One day he noticed that one of them had disappeared altogether only to reappear later and within a few days had concluded that they were orbiting Jupiter. When, later in the year, he discovered that the planet Venus had ‘phases’ similar to the earth’s Moon, when differences in appearance suggested different positions in the sky, he began to subscribe firmly to the Copernican theory.

This flew in the face of a major part of Roman Catholic belief, based on the Aristotelian principle that all heavenly bodies orbited the Earth.

In time, Galileo was found guilty of heresy and forced to recant his views under threat of torture. He would have spend the last years of his life in prison had the court not shown some clemency and commuted his sentence to house arrest.

The campanile of St Mark's is a famous landmark
in Venice, towering over the basilica

Travel tip:

The Campanile of St Mark’s has become one of the symbols of Venice, instantly recognisable as part of the landscape of St Mark’s Square - Piazza San Marco - standing away from the basilica itself. Constructed in the ninth century, one of its first uses was a watchtower or lighthouse. Over the centuries it has been restored and added to several times, often following regular lightning strikes.  It assumed its definitive shape in the 16th century with restorations made to repair damage caused by the earthquake of March 1511, when the belfry, attic and spire were added. The whole structure collapsed in 1902, a few days after a large crack appeared in the north wall, it is thought because of erosion of the foundations after almost 1,000 years, but was rebuilt over the following 10 years.

Travel tip:

Galileo lived under house arrest was Villa Gioella, a house he rented a couple of miles from the from the centre of Florence in the Arcetri hills.  In Galileo’s time it was a farmhouse, surrounded by many acres of land. The area is also home to the Arcetri Observatory, which was opened in 1872 after astronomers at La Specola Observatory, not far from the Pitti Palace, decided that pollution from artificial light was making clear images impossible.

More reading:

The father of modern science

Galileo Galilei convicted of heresy

How Niccolò Zucchi discovered the 'belts' around Jupiter

Also on this day:

The Feast Day of Saint Patricia of Naples

79AD: Vesuvius erupts


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Umberto Guidoni - astronaut

First European to step on to the International Space Station

Guidoni flew two Space Shuttle missions
during his time at NASA in Texas

The astronaut Umberto Guidoni, who spent almost 28 days in space on two NASA space shuttle missions, was born on this day in 1954 in Rome.

In April 2001, on the second of those missions, he became the first European astronaut to go on board the International Space Station (SSI).

After retiring as an active astronaut in 2004, Guidoni began a career in politics and was elected to the European Parliament as a member for Central Italy.

Although born in Rome, Guidoni’s family roots are in Acuto, a small hilltown about 80km (50 miles) southeast of the capital, in the area near Frosinone in Lazio known as Ciociaria.

Interested in science and space from a young age, Guidoni attended the Gaio Lucilio lyceum in the San Lorenzo district before graduating with honours in physics specializing in astrophysics at the Sapienza University of Rome in 1978, obtaining a scholarship from the National Committee for Nuclear Energy, based outside Rome in Frascati.

He worked in the Italian Space Agency as well as in the European Space Agency. One of his research projects was the Tethered Satellite System, which was part of the payload of the STS-46 space shuttle mission.

Guidoni moved to Houston, Texas and trained for a year as an alternate payload specialist for that mission, for which he was part of the group of scientists coordinating the scientific operations of the Space Shuttle Atlantis from the ground.

Guidoni displays the symbol of the Presidency of the Italian
Republic during his 2001 mission

He made his first spaceflight aboard the Space Shuttle Columbia in 1996, which included the second flight of the TSS system (TSS-1R). Columbia launched on February 22, returning to the Kennedy Space Center on March 9, having completed 252 orbits, covering 10 million kilometers in 377 hours and 40 minutes .

His work in space focused on the control of the TSS’s electrodynamic experiments, which demonstrated, for the first time, the possibility of generating electrical power from space.

Guidoni’s second experience in space came on board the Space Shuttle Endeavour, on a Space Station assembly flight in 2001, a mission that included the inaugural flight of the Raffaello module, one of the three Italian pressurized logistics modules, which enabled four tons of supplies and scientific experiments to be transferred to the SSI.

Launched on April 19, it landed at the Edwards Air Force Base in California on May 1, having completed 186 orbits, covering approximately 8 million kilometers in 285 hours and 30 minutes.

Umberto Guidoni addresses supporters of the Sinistra e
Libertà party during a rally in Rome

When Guidoni entered the SSI as the first European astronaut on board, he carried with him the Italian flag and the banner of the Presidency of the Italian Republic, delivered to him by the president, Carlo Azeglio Ciampi.

Passionate about ecological issues, Guidoni entered politics immediately after he retired from active space travel, standing as an independent on the list of Italian Communists for the 2004 European elections and became an elected MEP.

He served until 2009 as a member of the parliamentary group comprising the European Left and the Nordic Green Left.

As an MEP, he served on various committees and working groups in the area of industry, research and energy, climate change, environmental health and food safety. He was a member of the budget control committee and was involved in working towards better relationships with the United States and Japan.

He lost his seat in 2009, standing as part of a list entitled Sinistra e Libertà - Left and Liberty. His involvement with politics continued for four years until 2013, when he had disagreements with the leadership group in his party and decided to quit.

Nowadays, married with one son, he works to popularise scientific subjects through writing an broadcasting.

In 2009 he presented a radio programme entitled From the Sputnik to the Shuttle, in which he retraced the main steps of the space era, and in 2009 narrated the epic history of the Apollo lunar missions for another radio broadcast.

A book based on that show - From the Earth to the Moon - was published in 2011. Guidoni has also written numerous newspaper and magazine articles and written books for children about space and space travel.

The town of Acuto sits on a ridge in the Ernici mountains

Travel tip:

The town of Acuto, which sits on a ridge in the Ernici mountains about 40km (25 miles) northwest of Frosinone in Lazio and about 80km (50 miles) southeast of Rome, suffers harsh winters with regular snowfall but is a popular place for city dwellers looking for an escape from the summer heat because its position exposes it to cooling breezes.  The town developed in the fifth century when many residents of nearby Anagni fled there in the face of a barbarian invasion. The town has many churches, going back to the days when Agnani and Acuto were important towns in the Papal States.

Piazza Cavour in the centre of Agnani

Travel tip:

Anagni is about 15km (9 miles) by road from Acuto. During medieval times many popes chose to reside in Anagni, considering it safer and healthier than Rome. The town produced four popes, the last one being Boniface VIII, who was hiding out there in 1303 when he received the famous Anagni slap, delivered by an angry member of the fiercely antipapal Colonna family after he refused to abdicate. After his death the power of the town declined and the papal court was transferred to Avignon. The medieval Palace of Boniface VIII, is near the Cathedral in the centre of the town. Close by there is a restaurant named Lo Schiaffo - The Slap.

More reading:

How Samantha Cristoforetti set records for women in space

The scientist from Rome who created the world's first nuclear reactor

The kidnapping of Pope Boniface VIII

Also on this day:

1750: A composer at the heart of a murder mystery: the birth of Antonio Salieri

1943: The birth of the football great Gianni Rivera


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Giovanni Antonio Magini – astronomer and cartographer

Scientist laboured to produce a comprehensive atlas of Italy

The cover of Magini's great work, which
was published by his son in 1620

Giovanni Antonio Magini, who dedicated his life to producing a detailed atlas of Italy, was born on this day in 1555 in Padua.

He also devised his own planetary theory consisting of 11 rotating spheres and invented calculating devices to help him work on the geometry of the sphere.

Magini was born in Padua and went to study philosophy in Bologna, receiving his doctorate in 1579. He then dedicated himself to astronomy and in 1582 wrote his Ephemerides coelestium motuum, a major treatise on the subject, which was translated into Italian the following year.

In 1588 Magini joined in the competition for the chair of mathematics at Bologna University and was chosen over Galileo because he was older and had more moderate views. He held the position for the rest of his life.

But his greatest achievement was the preparation of Italia, or the Atlante geografico d’Italia, which was printed posthumously by Magini’s son in 1620.

Although Italy as a state has existed only since 1861, the name Italia, referring to the southern part of the peninsula, may go back to the ancient Greeks. It appeared on coins thought to have been produced in the 1st century BC and was eventually applied to the whole of the peninsula. Magini’s atlas set out to include maps of every Italian region with exact names and historical notes.

Giovanni Antonio Magini

It proved expensive to produce and Magini took on extra posts in order to fund it. These included working as mathematics tutor to the sons of Vincenzo I of Gonzaga, Duke of Mantua.

The atlas is dedicated to the duke, who assisted him with the project by arranging for maps of the many states of Italy to be brought to Magini.

The governments of Messina and Genoa also assisted him financially to help him produce the atlas.

Magini died in Bologna in 1617 and the lunar crater maginus was later named after him.

Giotto's brilliant frescoes cover the walls of the Scrovegni
Chapel, one of the Italy's great artistic treasures

Travel tip:

Padua in the Veneto, where Magini was born, is one of the most important centres for art in Italy and home to the country’s second oldest university. Padua has become acknowledged as the birthplace of modern art because of the Scrovegni Chapel, the inside of which is covered with frescoes by Giotto, an artistic genius who was the first to paint people with realistic facial expressions showing emotion. At Palazzo Bo in the centre of the city, where Padua’s university was founded in 1222, you can still see the original lectern used by Galileo and the world’s first anatomy theatre, where dissections were secretly carried out from 1594.

The courtyard of the Archiginnasio, the oldest surviving
building of the University of Bologna

Travel tip:

Bologna University, where Magini occupied the chair in Mathematics, was founded in 1088 and is the oldest university in the world. The oldest surviving building, the Archiginnasio, is now a library and is open Monday to Friday from 9 am to 7 pm, and on Saturdays from 9 am to 2 pm. It is a short walk away from Piazza Maggiore and the Basilica di San Petronio in the centre of the city.

Also on this day:

The feast of St Anthony of Padua

2000: Mehmet Ali Agca, the gunman who tried to kill Pope John Paul II, is granted a state pardon by the Italian government

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Galileo Galilei convicted of heresy

'Father of Science' forced to deny that earth revolved around sun

This 1857 painting by Cristiano Benti depicts
Galileo's appearance before the Inquisition

One of the more bizarre episodes in the history of human intellectual advancement took place in Rome on this day in 1633 when Galileo Galilei, the brilliant astronomer, mathematician, philosopher and engineer – often described as ‘the father of science’ - was convicted of heresy.

His crime was to support the view – indeed, to confirm it with scientific proof – that the sun rather than the earth was the centre of the solar system, as had been theorised by the Polish scientist Nicolaus Copernicus in the previous century.

This flew completely in the face of a major plank of orthodox Roman Catholic beliefs, within which the contention that the sun moved around the earth was regarded a fact of scripture that could not be disputed.

Galileo, something of a celebrity in his day who won the patronage of such powerful Italian families as the Medicis and the Barberinis following the discoveries he made with his astronomical telescope, had been essentially under surveillance by the Church since 1609 after publishing details of observations he had made that supported Copernicus’s theory of heliocentrism.

In 1616 the Copernican view was formally declared heretical and the biblical interpretation of creation was reaffirmed, part of which said that “God fixed the Earth upon its foundation, not to be moved forever.”

Pope Urban VIII - Matteo Barberini -
was sympathetic to Galileo

Galileo feared arrest but was given permission by Pope Urban VIII, a member of the Barberini faily, to continue his studies into Copernican theory provided his findings drew no definitive conclusions and acknowledged divine omnipotence.

However, when in 1632 Galileo published his Dialogue Concerning the Two Chief World Systems – namely that proposed by Copernicus and the traditional view put forward by the second century astronomer Ptolemy – he came down heavily in favour of Copernicus.  He was considered by the Church to have gone a step too far and Urban VIII, fearing for his future in a fiercely political climate, felt compelled to act.

Galileo was summoned to Rome for trial by Inquisition in 1633 and despite the strength of his evidence he was found guilty of heresy and forced to recant his own findings as “abjured, cursed and detested”. He did so with great reluctance but little choice, given that the alternative was to be burned at the stake.

As it was he was sentenced to be imprisoned indefinitely, his Dialogue was banned and the future publication of any of his research was forbidden.  He is said to have muttered the words “E pur, si muove” – “And yet, it moves” – after declaring the earth to be a fixed object, which had it been overheard might have enraged the court still further.

Yet he was again shown some clemency, the sentence of imprisonment being commuted to house arrest the following day, after which he was allowed to live out the remainder of his days at his villa at Arcetri, near Florence.  

He went blind in 1638 and died in 1642 but was able, nonetheless, to reconstruct and summarise the discoveries he had made earlier in his life in Two New Sciences, which was smuggled out of Italy and published in Holland.

The 1630 portrait of Galileo by Peter Paul
Rubens resides in a private collection

Of course, Copernicus and Galileo were subsequently proved beyond any doubt to be have been right.  Amazingly, it took the Catholic Church more than 350 years to formally acknowledge their error.

In 1757, Galileo’s Dialogue was removed from the Vatican’s list of banned publications and in 1984 a panel of scientists, theologians and historians, assembled in 1979 to look into the 1633 accusations, published a preliminary report which accepted that Galileo had been wrongfully condemned.

However, it was not until 1992 that the investigation was closed and Galileo was officially vindicated in a statement issued by Cardinal Paul Poupard, head of the investigation, which said: “We today know that Galileo was right in adopting the Copernican astronomical theory.”

Galileo's house in Arcetri, the
Villa Gioella

Travel tip:

The house to which Galileo returned after his sentence was commuted to house arrest is called Villa Gioella, which he rented. It is situated just three or four kilometres – a couple of miles – from the centre of Florence in the Arcetri hills.  In Galileo’s time it was a farmhouse, surrounded by many acres of land. He lived there with his daughter Celeste, who was a nun in an adjoining monastery.

Travel tip:

The Palace of the Holy Office, the building in Rome to which Galileo would have been summoned for trial in 1633, is what is known as an extraterritorial property of Vatican City, in that it lies outside the confines of the Vatican itself. The palace, originally built in 1514 for Cardinal Lorenzo Pucci and called Palazzo Pucci, is situated south of St. Peter's Basilica near the Petriano Entrance to Vatican City. In 1566–67, the palace was purchased by Pope Pius V and it was converted into the seat of the Holy Office.

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Giovanni Schiaparelli - astronomer

Discoveries sparked belief there was life on Mars

Giovanni Schiaparelli, in a photograph taken
in Milan in the 1870s

The astronomer Giovanni Schiaparelli, whose observations in the late 19th century gave rise to decades of popular speculation about possible life on Mars, was born on this day in 1835 in Savigliano, about 60km (37 miles) south of Turin.

Schiaparelli worked for more than 40 years at the Brera Observatory in Milan, most of that time as its director.

It was in 1877 that he made the observations that were to cause so much excitement, a year notable for a particularly favourable 'opposition' of Mars, when Mars, Earth and the Sun all line up so that Mars and the Sun are on directly opposite sides of Earth, making the surface of Mars easier to see.

Oppositions occur every two years or so but because the orbit of Mars is more elliptical than Earth's there are points at which it is much closer to the Sun than at others.  An opposition that coincides with one of these points is much rarer, probably taking place only once in a lifetime, if that.

Schiaparelli was deeply fascinated with Mars and knew that this opposition gave him the opportunity of his lifetime to make a detailed survey of the red planet and made every effort to ensure his vision and his senses were as sharp as they could be when he put his eye to the telescope.

Schiaparelli's map of the surface of Mars

In his memoirs, he noted that he avoided "everything which could affect the nervous system, from narcotics to alcohol, and especially... coffee, which I found to be exceedingly prejudicial to the accuracy of observation."

In previous research, Schiaparelli had noted the appearance of 'seas' and 'continents' but during the 1877 opposition he was convinced he could see a network of links between his so-called 'seas' which he described as "canali".

Schiaparelli used the word to indicate "channels" but in the reports of his findings in the English language press, particularly in the United Kingdom and the United States, the word was translated as "canals".

Coming soon after the construction of the Suez Canal, a a major feat of engineering on Earth, the possibility that Mars had a system of such artificially constructed waterways caused a frenzy of excitement, giving rise to much hypothesis and speculation about there being intelligent life on the planet.

Schiaparelli in a lithograph by Achille Beltrame in
 the magazine La Domenica del Corriere

Among the most enthusiastic supporters of this theory was the American astronomer Percival Lowell, who dedicated much of his life and personal fortune to building on Schiaparelli's work, convinced he could prove that life on Mars did exist.

Later, notably as a result of the work of another Italian astronomer, Vincenzo Cerulli, astronomers developed a consensus that the "canals" were an optical illusion, although the public hung on to the notion of life on Mars until halfway through the 20th century. In 1938, a radio adaptation in the United States of the HG Wells novel, The War of the Worlds, which included simulated news bulletins, caused many listeners to believe that an invasion of Earth by Martians was actually taking place.

The canal hypothesis was not finally laid to rest until spaceflights began in the 1960s and telescopes much more powerful than were available to Schiaparelli and his contemporaries confirmed that his canals simply did not exist.

At the time of the discovery, though, Schiaparelli had been convinced what he was seeing was real and produced detailed maps, showing his 'seas', land masses and numerous channels, that created an image of the surface of Mars that resembled the lagoon and islands of Venice.

Schiaparelli's grave at the Monumental Cemetery in Milan

Of his channels, he wrote: "It is [as] impossible to doubt their existence as that of the Rhine on the surface of the Earth."

His hypothesis was that Mars was a planet, like Earth, with seasons and that water was produced by the melting of a polar ice cap.  The system of channels, he suggested, carried this water to other parts of the planet, providing irrigation in the absence of rain. Although he felt these were more likely to have developed naturally, he did not rule out the possibility that some were created artificially.

Educated at the University of Turin, Schiaparelli worked at the Pulkovo Observatory near St Petersburg in Russia from 1859 to 1860 before being appointed to the staff of the Brera Observatory. He was also a senator of the Kingdom of Italy. The fashion designer Elsa Schiaparelli was his niece.

He died in Milan in 1910 at the age of 75. He is buried at the city's Monumental Cemetery.

The Piazza Santarosa in Savigliano

Travel tip:

Savigliano is a town of some 21,000 people with an industrial heritage based around its iron foundries and locomotive works, but also has silk manufacturers and sugar factories. The feature of the historic centre is the picturesque Piazza Santarosa, surrounded by pleasant arcades. Rail enthusiasts might like the Museo Ferroviario Piemontese, in Via Coloira, which has a collection of steam, diesel and electric locomotives. It is open to the public on Saturday and Sunday all year round and also on Thursdays in the summer.  For more details visit www.museoferroviariopiemontese.it

The Brera Observatory in Milan

Travel tip:

The Brera Observatory can be found at the historic Palazzo Brera in the centre of Milan, established in 1764 by the Jesuit astronomer Ruggero Boscovich.  The Palazzo is also home to the Accademia di Brera, the city's art academy, and its gallery, the Pinacoteca di Brera; the Orto Botanico di Brera, a botanical garden; and the Biblioteca di Brera library. For more information, visit www.brera.inaf.it

More reading:

How Niccolò Zucchi designed one of the earliest telescopes

The 16th century cosmologist burned at the stake for challenging orthodox thinking on God and the universe

Why astronomer Galileo Galilei is called the father of modern science

Also on this day:

1820: The birth of future king Victor Emmanuel II

1972: The accidental death of publisher Giangiacomo Feltrinelli

(Gravestone by Deeday-UK; Brera Observatory by Ansgar Hellwig; via Wikimedia Commons)


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Niccolò Zucchi – astronomer

Jesuit's invention gave him a clear view of the planets

A rare portrait of Niccolò Zucchi

Niccolò Zucchi, who designed one of the earliest reflecting telescopes, was born on this day in 1586 in Parma.

His invention enabled him to be the first to discover the belts on the planet Jupiter and to examine the spots on the planet Mars. This was before the telescopes designed by James Gregory and Sir Isaac Newton, which, it has been claimed, were inspired by Zucchi’s book, Optica philosophia.

Zucchi studied rhetoric in Piacenza and philosophy and theology in Parma before entering the Jesuit order in Padua at the age of 16.

He taught mathematics, rhetoric and theology at the Collegio Romano in Rome and was then appointed rector of a new Jesuit college in Ravenna. He then served as apostolic preacher (the preacher to the Papal household) for about seven years.

A modern image of Jupiter from the
 Hubble telescope shows the belts
 Zucchi reputedly saw in 1630

Zucchi published several books about mechanics, magnetism, barometers and astronomy.

When he was sent with other papal officials to the court of Ferdinand II, he met the German mathematician and astronomer, Johannes Kepler, who encouraged his interest in studying the planets. They carried on writing to each other after Zucchi returned to Rome and when Kepler got into financial difficulties, Zucchi gave him one of his own telescopes as a gift.

Along with a fellow Jesuit, Daniello Bartoli, Zucchi was probably the first to see the belts on the planet Jupiter in 1630 and he reported seeing spots on Mars in 1640.

He also demonstrated that phosphors generate light, rather than store it, in 1652.

The lunar crater Zucchius is
named after Niccolò Zucchi

Although many people have written that Zucchi used his early reflecting telescope to observe the planets, this was disputed by some historians in the 19th century. However, the crater Zucchius on the Moon was named after him, in acknowledgement of his scientific achievements.

Zucchi died in Rome in 1670, at the age of 83.

Travel tip:

Parma, where Niccolò Zucchi was born, is one of Italy’s great art cities and has a wealth of churches and palaces containing masterpieces. The ancient city in the region of Emilia-Romagna is also famous for its culinary specialities. Parmigiano-Reggiano cheese and Prosciutto di Parma, a delicate cured ham, originated there, as well as the many dishes cooked alla parmigiana.

The Collegio Romano, where Zucchi taught

Travel tip:

The Collegio Romano, where Niccolò Zucchi taught in Rome, was established in 1551 by Ignatius Loyola, the founder of the Jesuit Order. A new building was erected for the College, under the patronage of Pope Gregory XIII, in 1582. The building where Zucchi gave his lectures is in the Pigna district of the city in a square now known as Piazza del Collegio Romano. The building is currently used partly by the Ministry of Heritage and Culture and partly by the Ennio Quirino Visconti high school.

More reading:

Why Galileo Galilei is known as the 'father of modern science'

Giovanni Riccioli - 17th century astronomer who studied the lunar surface 

Vincenzo Coronelli, the friar famous for his finely-crafted globes of the world

Also on this day:

1478: Birth of Baldassare Castiglione, the author of the Italian classic, The Book of the Courtier 

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Giovanni Riccioli – astronomer

Jesuit priest had a crater on the moon named after him

Giovanni Battista Riccioli pictured in
an illustration from a 17th century book

Giovanni Battista Riccioli, a Jesuit priest who became one of the principal astronomers of the 17th century, was born on this day in 1598 in Ferrara.

He was renowned for his experiments with pendulums and falling bodies and for his studies of the motion of the earth and the surface of the moon.

Riccioli entered the Society of Jesus when he was 16 and after completing his training began studying the humanities.

Between 1620 and 1628 he studied philosophy and theology at the Jesuit College in Parma, where he was taught by Giuseppe Biancani, who had accepted new ideas such as the existence of lunar mountains.

After Riccioli was ordained he taught physics and metaphysics at Parma and engaged in experiments with falling bodies and pendulums. He is believed to be the first scientist to measure the rate of acceleration of a freely falling body. He also carried out observations of the surface of the moon.

Riccioli's moon map, which he drew in 1651

Riccioli became more committed to studying astronomy than theology and his superiors in the Jesuits assigned him to carry out astronomical research.

He went to work at a college in Bologna where he built an observatory equipped with telescopes and instruments for astronomical observation.

One of his most significant works was his Almagestum Novum, an encyclopaedic volume packed with illustrations and tables that became a standard reference book for astronomers. He continued to publish works on astronomy and theology and to correspond with other scientists right up to his death at the age of 73 in 1671 in Bologna.

A crater on the moon has been named the Riccioli crater in honour of the astronomer.

Ferrara's impressive castle

Travel tip:

Ferrara in Emilia-Romagna, where Riccioli was born, was the city of the Este dukes and still has winding cobbled streets, medieval houses, Renaissance palaces and a stunning castle. It has been declared a World Heritage Site by Unesco.

Travel tip:

Bologna, where Riccioli worked until he died, is the capital of the Emilia-Romagna region and home to the oldest university in the world, which was founded in 1088. An important cultural and artistic centre, Bologna is famous the world over for its dish of tagliatelle al ragù bolognese, strips of pasta with a rich, meat sauce.

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Galileo Galilei – astronomer and physicist

Scholar has been judged to be the founder of modern science 

A portrait of Galileo Galilei painted
in 1636 by Justus Sustermans 

Renaissance scientist Galileo Galilei was born on this day in 1564 in Pisa.  He was an astronomer, physicist and engineer and has been called the father of observational astronomy and of modern science.

His astronomical observations, made with the help of telescopes he designed and engineered himself, confirmed the phases of Venus, discovered the four largest satellites of Jupiter and analysed sunspots. He cannot be credited with inventing the telescope, his own having come later than one patented in Holland, although he was certainly a pioneer of its development. Among Galileo's other inventions, however, the military compass is accepted as solely his.

Controversy marred Galileo's later life. His astronomical observations and other aspects of his scientific knowledge led him to support the view of the Polish scientist Nicolaus Copernicus in the previous century that the sun rather than the earth was the centre of the solar system.

This led to his trial and conviction by the Roman Catholic Inquisition as a heretic. He avoided being burned at the stake by reluctantly recanting the statements he had made in a publication on the subject but spent the last 10 years of his life under house arrest at his villa at Arcetri, south of Florence. 

Galileo was educated at a monastery near Florence and considered entering the priesthood but he enrolled instead at the University of Pisa to study medicine.

In 1581 he noticed a swinging chandelier being moved to swing in larger and smaller arcs by air currents. He experimented with two swinging pendulums and found they kept time together although he started one with a large sweep and the other with a smaller sweep. It was almost 100 years before a swinging pendulum was used to create an accurate timepiece.

Two of Galileo Galilei's early telescopes, which
are kept at the Museo Galileo in Florence

He talked his father, Vincenzo, a noted lutenist and composer, into letting him study mathematics and natural philosophy instead of medicine and by 1589 had been appointed to the chair of Mathematics at Pisa.

He moved to the University of Padua where he taught geometry, mechanics and astronomy until 1610. His interest in inventing is thought by some historians to have been driven by family circumstances. After the death of their father, Galileo's younger brother, Michelangelo or Michelagnolo, who also became a lutenist and composer, was financially dependent on his older sibling, who saw the invention and patenting of new devices as a way to generate extra income.

During his own lifetime and subsequently, Galileo tended to be referred to by his first name only, as was common during the 16th and 17th centuries in Italy. He is thought to be related to Galileo Bonaiuti, an important physician, professor, and politician in Florence in the 15th century.

Galileo's appearance before the Inquistion led to
him being threatened with being burned at the stake

Like Galileo Galilei almost two centuries later, Bonaiuti was buried in the Florence's Basilica of Santa Croce, the resting place of many significant historical figures, including the sculptor Michelangelo Buonarotti, the statesman and author Niccolò Machiavelli and the composer Gioachino Rossini.

Galileo's financial situation might have been better had he not deviated from his father's wish for him to study medicine, which at the time offered a better prospect of a comfortable career. But after his early experiments with pendulums while ostensibly studying medicine, he attended a lecture on geometry and persuaded his father to let him switch to mathematics and natural philosophy.  Soon, his inventive mid led to his creation of a thermoscope, a forerunner of the thermometer.

In time Galileo became Chair of Mathematics at Pisa University before moving to the University of Padua, where he taught geometry, mechanics and astronomy and made significant discoveries in both pure science and applied science, for example on the strength of materials and in his advancement of the telescope. He enjoyed the patronage of the Medici and Barberini families at times during his life.

Following his conviction for heresy and subsequent house arrest, from 1633 until his death at Arcetri in 1642, Galileo wrote one of his finest works, Two New Sciences, about the laws of motion and the principles of mechanics.

Pisa's famous leaning tower is unmissable
by visitors to the Campo dei Miracoli

Travel tip:

Pisa, the town of Galileo’s birth, is famous the world over for its leaning tower, one of the most popular tourist attractions in Italy . Already tilting when it was completed in 1372, the bell tower of the cathedral is in Piazza del Duomo, also known as Piazza dei Miracoli or Campo dei Miracoli in the centre of Pisa.  Pisa's other attractions include a wealth of well-preserved Romanesque buildings, Gothic churches and Renaissance piazzas. The city has a lively charm enhanced by its reputation as a centre of education. The University of Pisa, founded in 1343, now has elite status, rivalling Rome’s Sapienza University as the best in Italy, and a student population of around 50,000 makes for a vibrant cafe and bar scene. Not far from the city is the resort of Marina di Pisa, a seaside town located 12km (7 miles) from Pisa that began to develop in the early 17th century and grew rapidly after a railway line from Pisa opened in 1892. That growth saw the opening of restaurants and hotels and the construction of many beautiful Art Nouveau and neo-medieval villas. 

The Museo Galileo in Florence is housed in the 11th
century Palazzo Castellani on Piazza dei Giudici

Travel tip:

The Museo Galileo in Florence is in Piazza dei Giudici close to the Uffizi Gallery. It houses one of the biggest collections of scientific instruments in the world in Palazzo Castellani, an 11th century building. The first floor's nine rooms contain the Medici Collections, which include his two extant telescopes and the framed objective lens from the telescope with which he discovered the Galilean moons of Jupiter, plus his thermometers and a collection of terrestrial and celestial globes. The nine rooms on the second floor house instruments and experimental apparatus collected by the 18th-19th century Lorraine dynasty, which bear witness of the remarkable contribution of Tuscany and Italy to the progress of electricity, electromagnetism and chemistry.  The museum is open Mondays to Sundays from 9.30 to 18.00, closing at 13.00 on Tuesdays. 

More reading:

Galileo Galilei convicted of heresy

Galileo demonstrates the potential of the telescope to Venetian lawmakers

The disciple of Galileo who invented the barometer 

Also on this day:

1898: The birth of comic actor Totò 

1910: The birth of circus clown Charlie Cairoli

1927: The birth of cardinal and papal candidate Carlo Maria Martini

1944: The destruction by Allied bombers of Monte Cassino Abbey

(Picture credits: Telescopes by Sailko; Leaning Tower by Softeis; via Wikimedia Commons)

(Painting locations: Galileo portrait (1636-40) by Justin Sustermans, National Maritime Museum, Greenwich, London; Galileo facing the Roman Inquisition (1857) by Cristiano Banti, private collection)

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