Astronomy

The Uranographia of Hevelius, the most detailed and influential celestial atlas of the 17th century, contains 54 beautiful double-page engraved plates of 73 constellations, and 2 oversized folding plates of planispheres.

A globe maker for the French royal family, J. Fortin, prepared this edition of Flamsteed’s celestial atlas in a much reduced format. Flamsteed was the first Astronomer Royal, who oversaw the building of the Greenwich Observatory. Newton relied upon Flamsteed’s star positions in his Principia.

Accurate depiction of the topography of the Moon was accomplished by mid-century in this lunar atlas by Hevelius. It set a new standard for precision that remained unmatched for a century.

Coronelli, a Franciscan theologian and astronomer who worked in both Italy and France, was a founder of modern geography and an influential maker of celestial and terrestrial globes.

Inspired by Galileo, Fontana constructed his own telescope, improving the optics. Around 1629 he began a series of detailed sketches of the face of the Moon. A series of 28 copperplate engravings reveal the Moon’s surface as perceived on different dates, as well as a fold-out lunar map.

This is the scarce first edition of writings by a leading learned society in Bologna, the Accademia dei Gelati. The volume includes striking woodcuts by the astronomer Geminiano Montanari of white stars against a black background.

Abu Ma’shar, an astronomer in 9th century Baghdad, was one of the most prolific writers on astrology during the Middle Ages. This work was cited by Albert the Great, Roger Bacon, Pierre d’Ailly, and Pico della Mirandola, among others.

Nasmyth, a Scottish engineer known for his invention of the steam hammer, combined an avid interest in astronomy and photography. Carpenter was an astronomer at the Greenwich Observatory. Together they constructed plaster models of the lunar surface.

In this illustration, Chérubin d’Orléans adopted the lunar map of Hevelius. The putti are observing the Moon with telescopes equipped with the “pantograph,” a perspectival tool devised by d’Orléans.

In contrast to Piccolomini, who omitted constellation figures in favor of scientific accuracy, Bayer superimposed constellation figures upon the star maps without compromising positional accuracy. These figures were artfully drawn by Alexander Mair.

In contrast to the constellation figures in Hyginus and Abu Ma’shar, Piccolomini created a star atlas, measuring the positions of the stars according to an indicated scale (specific to each plate). He designated stars by Roman letters (a, b, c, etc.) in order of apparent brightness.

Astronomers and artists alike studied the science of perspective. The title page of the Sidereus nuncius refers to the telescope as a little “perspective tube” (perspicilli).

Astronomers and artists alike studied the science of perspective. The title page of the Sidereus nuncius refers to the telescope as a little “perspective tube” (perspicilli).

Hooke’s Micrographia is the most remarkable visual treatise of 17th century microscopy. In describing the appearance of cork, Hooke coined the term “cell.” Hooke’s large fold-out plate of the flea is unforgettable.

The search for comets, charged with astrological meaning, stimulated careful scrutiny and revision of maps of the stars. Lubieniecki collected an anthology of cometary reports, attempting to describe every known comet observed in Europe up to 1665.

For this first edition of Ptolemy’s collected works, Johann Honter drew constellation figures after the manner of Albrecht Dürer. The figures appear in contemporary dress rather than in a classical style.

Astronomers and artists alike studied the science of perspective. The title page of the Sidereus nuncius refers to the telescope as a little “perspective tube” (perspicilli).

Astronomers and artists alike studied the science of perspective. The title page of the Sidereus nuncius refers to the telescope as a little “perspective tube” (perspicilli).

Dante’s love for astronomy pervaded this epic poem. Not by accident did he bring each of the three volumes to a close with the word “stelle,” or star.

In the most lavishly illustrated book of the 1400’s, solid spheres ceaselessly turn, carrying the planets and filling the universe between the outermost heaven and the central Earth.

On the Island of Hven, Tycho Brahe built a Renaissance research center called Uraniborg, “City of the Stars.” The first book printed on Tycho’s printing press at Uraniborg displays his motto, “looking up, I look down.” That motto symbolized his aim of coordinating the study of astronomy,...

“I thank you because you were the first one, and practically the only one, to have complete faith in my assertions.” – Galileo In this public letter, Kepler expressed support for Galileo’s telescopic discoveries.

In Works and Days, the poet Hesiod, a roughly contemporary of Homer, compiled guidelines for conducting life and forecasting the weather according to the stars.

In a 1611 book published by the Academy of the Lynx, the Jesuit astronomer Christoph Scheiner argued that sunspots are little planets circling the Sun like Venus. Galileo answered Scheiner with this book.

This book recounts the establishment of the Jesuit mission in China in the late 1500s led by Matteo Ricci. When Ricci predicted a solar eclipse in 1592 with greater accuracy than the astronomers of the Chinese court, Emperor Wan-li invited Ricci to Beijing.

This is the first English translation of Newton’s masterwork in physics. The Copernican idea that the Earth moves as a planet required a thorough revision of physics. Galileo undertook this task in his Discourse on Two New Sciences, published 80 years after Copernicus.

This is a replica of an original polyhedral sundial created by Stefano Buonsignori in Florence in 1587, held in the Museo Galileo in Florence.

Aratus, a Greek scientist and poet of the 3rd century B.C.E., offered practical advice for predicting the weather by learning to recognize the seasonal appearances of constellations.

Gallucci, a Venetian scholar, was interested in astronomical instruments, both physical and on paper. The “Theater of the World” features a parade of rotating wheels, or “volvelles,” descendants of the astrolabe.

This Copernican cosmic section, the first published in Italy, appears in a sympathetic account, known to Tycho and to Kepler, which may have influenced Galileo. Naibod was a professor of mathematics at Padua who likely studied with Erasmus Reinhold in Wittenberg.

To provide entertainment at a dinner held by the Grand Duke of Tuscany, Galileo debated the Aristotelian physicist Lodovico delle Columbe on the topic of floating bodies. Galileo employed Archimedes’ mathematical analysis.

In this minor work, Kepler offered an analysis of comets that agreed with Grassi’s.

In this translation of Huygens’ Kosmotheoros, Huygens took up questions of the habitability of other planets and the existence of extraterrestrial life. These topics were also considered by Kepler, Wilkins and other popular writers.

Scheiner, a Jesuit astronomer, eventually published the definitive work of the 17th century on sunspots, in which he accepted Galileo’s argument that sunspots “move like ships” on the surface of the Sun.

For Robert Fludd, the universe is a monochord, its physical structure unintelligible without an understanding of music. In another section of the book, Fludd depicts the universe as a Temple of Music.

In this introduction to astronomy and geography, the Moon lies embedded within a solid sphere carrying it around the Earth once a month. The solid sphere explains why the same side of the Moon always faces the Earth.

In this book, Regiomontanus predicted the positions of the Sun and Moon for 40 years. He designed a sundial to work independently of one’s latitude, and a volvelle, or circular dial, to locate the position and phase of the Moon according to date and time.

This is Kepler’s famous pretzel diagram, where he focused attention on the planet rather than the rotating solid sphere which carried the planet. In an Earth-centered system, the planet must follow some kind of similar pretzel path as it is carried along within a thick solid sphere.

Bernardino Baldi was an Italian mathematician whose work gives insight into the milieu of Galileo. This is one of two autograph manuscripts by Baldi held by the Collections.

The most popular ancient work on astrology was Ptolemy’s Tetrabiblos, as it was known in Greek, or Quadripartitum in Latin. Astrology provided the context in which astronomy was pursued.

In astrology, a “climactic year” marks a turning point, a moment of greatest risk. The preface explains that 1679 was Hevelius’ climactic year, for in that year his observatory burned. Fire destroyed manuscripts, books and instruments, including his sextant. He was 67 years old.

In this book, Galileo opened a “Controversy over the Comets” by attacking Grassi. Published under the name of his student, Mario Guiducci, it was actually written almost entirely by Galileo himself.

A Chinese celestial atlas and chronological tables, reproduced in Williams’ own hand, appear in this record of 372 comet sightings from 611 B.C.E. to 1640 C.E.

Wright proposed a model of the Milky Way as a flat wheel, and envisioned the nebulae as distant worlds upon worlds, far removed from the Milky Way itself.“That this in all Probability may be the real Case, is in some Degree made evident by the many cloudy Spots, just perceivable by us, as far...

Clavius taught mathematical astronomy in the Rome College (Collegio Romano), the leading Jesuit university in Rome. Aristotle did not emphasize mathematics, but Clavius’ lifelong work established mathematics and astronomy as essential areas of study for Jesuit schools.

Edmond Halley, later of cometary fame, sailed to the South Pacific island of St. Helena. Over a period of 2 years, Halley recorded the positions of 341 southern stars in this table of the right ascensions and distances of the principal southern stars.

Although Galileo rushed to print his telescopic observations, he did not invent the telescope. Jacob Metius was one of several Dutchmen with a claim to the invention of the telescope. This book by Jacob’s brother mentions Jacob’s telescopic observations of the satellites of Jupiter.

Ptolemy’s influential music theory was related to his astronomy. Through sight, we apprehend beauty through astronomy. Through hearing, we apprehend beauty through harmony.

This commentary on Aristotle’s meteorology contains numerous contemporary annotations and drawings (not yet studied). D’Ailly was a theologian, mathematician, astronomer, and cosmographer who helped the medieval church heal the schism of three rival popes.

In 1840, Agassiz introduced a radical element of contingency into geohistory, contrary to then widespread assumptions of uninterrupted gradual cooling.

This is the first edition of Messier's catalog of cloudy spots or "nebulae," numbered from M1 to M45. In 1781, Messier published a final catalog of 103 nebulae, which are now called "Messier objects." The Great Orion Nebula is M42.

Kepler wrote an earlier work on optics (1604) as a supplement to the medieval treatise of Witelo. In this sequel, he clarified the optics of refractive lenses and greatly advanced understanding of how the telescope actually works. The annotations in this copy are unstudied.

In the Scandaglio, Galileo’s friends tried to refute Grassi’s Astronomical Balance. This obscure and mysterious work appeared under the name of the brother of the better-known Francesco Stelluti, one of the founders of the Academy of the Lynx and friend of Galileo and Prince Cesi.

Copernicus argued that the Sun rather than the Earth lies in the center of the universe. The Earth moves as a planet around the Sun. In 1543 little proof was available that the Earth moves; there were many reasons not to accept it.

Accepting Agassiz’ theory of the Ice Age, Adhémar proposed that an astronomical cycle – the precession of the equinoxes – affects the melting of polar ice caps and thereby may lead to a catastrophic rise in sea level around the globe.

In a work entitled “On the Universe,” Aristotle argued that a 5th element, called ether or the quintessence, composes the celestial spheres that naturally rotate in place above the region where the four lower elements mix together beneath the Moon.

Bode created a new constellation, Herschels Teleskop, near Auriga, to honor William Herschel’s discovery of Uranus in 1781. This Bode-Fortin-Flamsteed atlas is a 1782 German edition of Fortin’s 1776 reprinting of Flamsteed’s 1729 atlas.

For two decades, Tycho and his assistants at Uraniborg produced thousands of astronomical observations of unprecedented quality. Tycho’s large-scale observing instruments, together with sophisticated new error correction techniques, increased observational precision by a factor of twenty.

An armillary sphere is a spherical astrolabe, showing the great circles in their unflattened orientation: The great circle of the ecliptic (the path of the Sun) is marked off in degrees of celestial longitude and in the 12 signs of the Zodiac.

In a work entitled “On the Universe,” Aristotle argued that a 5th element, called ether or the quintessence, composes the celestial spheres that naturally rotate in place above the region where the four lower elements mix together beneath the Moon.

Why physicians studied astronomy: Zodiac Man diagrams like this one reveal the hidden correspondences between the organs of the body (the microcosm) and the influences of the stars and planets that affect them (the microcosm).

“Many a night I saw the Pleiades rising thro’ the mellow shade, glitter like a swarm of fire-flies Tangled in a silver braid.” “Locksley Hall,” 5th couplet.

Kepler’s major correspondence is gathered here in two rare volumes bound together. Bernegger, one of Kepler’s closest friends, also published Latin translations of Galileo’s Compass, Letter to the Grand Duchess Christina, and Dialogue on the Two Chief Systems of the World.

By far the best known 16th-century defender of Copernicus was Johann Kepler. In this work he demonstrated that vast empty regions lying between the planetary spheres, which were required by Copernicus, were not wasted space.

Although Galileo eloquently championed mathematical methods in science, the main target of his wit and sarcasm in The Assayer was Grassi, a fellow astronomer, whose mathematical methods proved that comets move above the Moon.

This work contains a survey of the constellations and a cosmological dialogue, Lo Spaccio de la Bestia Trionfante (The Expulsion of the Triumphant Beast, 1584). Bruno, a Dominican astrologer and philosopher, affirmed that the universe is infinite, having no center.

Hubble’s investigations with the 100-inch Hooker Telescope at Mount Wilson observatory, overlooking Los Angeles, California, led to a dramatic expansion of the universe. For Hubble, the universe is not limited to the Milky Way galaxy.

The Rudolpine Tables were not a best seller. Three years later, Kepler and his son-in-law Jacob Bartsch published this little extract to stir up interest in the Rudolphine Tables and boost sales. It contains predictions of the transits of Mercury and Venus across the disk of the Sun in 1631.

This work was attributed to Proclus (5th century), one of the most important Neoplatonic philosophers of late antiquity. It became one of the most popular introductions to astronomy during the Italian Renaissance, appearing in more than 70 16th-century editions.

Photographs of the Beijing observatory show what remained of the astronomical instruments in 1897.

In the same year that Galileo published The Assayer, Grassi delivered these lectures to Jesuit students in the Rome College (Collegio Romano).

Astronomers use astrolabes for dozens of astronomical operations including telling time by the Sun or stars and determining the positions of planets.

With a telescope, Mayr observed the four satellites of Jupiter, accurately determining their periods of revolution. He named them Europa, Io, Ganymede and Callisto, names which are still used today. In this work Mayr also considered Tycho’s objection to Copernicus based upon star sizes.

In De revolutionibus, Copernicus placed the Sun in the center of the universe and set the Earth in annual motion around the Sun. This is the 3d edition, printed in 1617, the year after the Inquisition stimulated fresh interest in the work by placing it on the Index of Prohibited Books.

In his second and last contribution to the “Controversy over the Comets,” Kepler stepped in as a “shield-bearer” to defend Tycho from Galileo’s attacks.

Prior to Newton, fewer than half a dozen astronomers accepted Kepler’s three laws. Galileo was typical in ignoring everything Kepler did. Yet this beautiful book is an exception: it clearly demonstrated that Kepler’s laws were more accurate than anything that had come before.

This sun-centered cosmic section representes the first published defense of Copernicus in England, printed in a work of meteorology.

Abraham bar Hiyya, also known as Savasorda, was a 12th century Jewish mathematician and astronomer in Barcelona. In this beautiful introduction to astronomy, bar Hiyya’s text appears in Hebrew alongside a Latin translation.

Astronomers use quadrants and sextants to measure angular distances in the night sky, such as the angular divergence between a planet and the nearest bright star. One may also measure the height of the North Star above the horizon, which is equal to one’s latitude on the Earth.

Commentaries on Genesis often served as scientific treatises or encyclopedias. Mersenne, a French theologian, astronomer, music theorist and scientific correspondent, addressed a wide range of issues in cosmology in this commentary.

In a comical ballad called “The Star-Splitter,” Robert Frost described a man outdoors splitting firewood after the first frost of autumn: “You know Orion always comes up sideways.

Milton’s poem, an epic story of the world, recounts the creation and fall, the life of Christ, and the final consummation. Yet in the midst of these history-changing events, Milton found room to mention Galileo’s telescopic discoveries.

This book explains how to use the terrestrial and celestial globes, an armillary sphere (which shows the movements of the sky), and an orrery (which models the motions of the planets). Martin operated an instrument shop in London.

The frontispiece of Riccioli’s treatise depicts not two, but three major systems of the world. The Ptolemaic system rests discarded (lower right corner) because of the phases of Venus and Mercury (upper left corner). All-seeing Argus looks on, holding a telescope.

The frontispiece of Riccioli’s treatise depicts not two, but three major systems of the world. The Ptolemaic system rests discarded (lower right corner) because of the phases of Venus and Mercury (upper left corner). All-seeing Argus looks on, holding a telescope.

An orrery, also called a planetarium, shows the choreography of planets as they dance with coordinated precision around the Sun. From antiquity, geocentric (Earth-centered) models of the moving planets were constructed, such as the Antikythera device and large mechanical clocks.

In Descartes’ cosmology, each star lies at the center of a “vortex,” or gigantic pool of circulating fluid. Stars and vortices are mortal, passing into and out of existence.

Even today, while we adopt the Copernican system, we still teach observational astronomy and navigation by the stars using the traditional geocentric instruments: nocturnal dials, celestial globes, and armillary spheres.

Newton believed that Solomon’s Temple encoded his inverse square law for universal gravitation. To Newton, his grandest achievement was merely a rediscovery of the treasures of ancient wisdom.

Algarotti’s popular introduction to Newtonian science went through many editions and aided in the dissemination of Newtonian ideas on the European continent. It was dedicated to Fontenelle. Like Fontenelle’s Plurality of Worlds, it was written as an entertaining dialogue.

Scientific theories may be accepted on the basis of a weighing of many complex factors rather than a single determinative observation or crucial experiment. From antiquity, Copernicanism had been rejected due to a failure to observe stellar parallax.

The Foucault pendulum swings in a constant plane or direction, and thus reveals the rotation of the Earth turning underneath.