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The Crab Nebula
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The Crab Nebula

The Crab Nebula
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The Crab Nebula

New silver medallist in the central region of our Milky Way
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New silver medallist in the central region of our ...

Massive collision of objects
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Massive collision of objects

RCW 108 is a region where stars are actively forming within the Milky Way galaxy
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RCW 108 is a region where stars are actively formi...

This WISE mosaic is of the Soul Nebula
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This WISE mosaic is of the Soul Nebula

glacial craters on Mars
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glacial craters on Mars

Glowing stellar nursery
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Glowing stellar nursery

The galaxy Messier 101
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The galaxy Messier 101

Proctor Crater that has both dunes and ripples
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Proctor Crater that has both dunes and ripples

Mars Express Image: Olympus Mons caldera in perspective  Source: European Space Agency Posted Wednesday, August 11, 2004This perspective view, taken by the High Resolution Stereo Camera
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Mars Express Image: Olympus Mons caldera in perspe...

Ice on the surface of the planet Mars
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Ice on the surface of the planet Mars

Geologic layering on Mars hints at past conditions
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Geologic layering on Mars hints at past conditions

The Crab Nebula
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The Crab Nebula

Hebes Chasma
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Hebes Chasma

Microwave light emitted 380,000 years after the Big Bang
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Microwave light emitted 380,000 years after the Bi...

Cosmic nursery
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Cosmic nursery

Noctis Labyrinthus formation
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Noctis Labyrinthus formation

Artist's concept depicting a distant hypothetical solar system
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Artist's concept depicting a distant hypothetical ...

Largest volcano in the solar system
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Largest volcano in the solar system

Area 51 is a military base
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Area 51 is a military base

NASA’s Mars Reconnaissance Orbiter
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NASA’s Mars Reconnaissance Orbiter

The Andromeda Galaxy
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The Andromeda Galaxy

The Seagull nebula
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The Seagull nebula

The total mass within giant galaxy cluster
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The total mass within giant galaxy cluster

The Hellas Basin
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The Hellas Basin

Image of a star-forming cloud of dust and gas
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Image of a star-forming cloud of dust and gas

Nearly invisible ring around Saturn
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Nearly invisible ring around Saturn

Possible newfound planet
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Possible newfound planet

Dusty remains of shredded asteroids around several dead stars
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Dusty remains of shredded asteroids around several...

Heart of the colliding 'Antennae' galaxies
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Heart of the colliding 'Antennae' galaxies

M33, also known as the Triangulum Galaxy
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M33, also known as the Triangulum Galaxy

Kepler's Supernova Remnant
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Kepler's Supernova Remnant

New silver medallist in the central region of our Milky Way
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New silver medallist in the central region of our ...

Image of the moon
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Image of the moon

Kepler's Supernova Remnant
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Kepler's Supernova Remnant

Carbon dioxide ice cap at the south pole of Mars
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Carbon dioxide ice cap at the south pole of Mars

Valles Marineris Perspective from Mars Express
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Valles Marineris Perspective from Mars Express

Giant Star Goes Supernova
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Giant Star Goes Supernova

Artist's impression showing a brown dwarf
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Artist's impression showing a brown dwarf

Global Positioning System
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Global Positioning System

The Sea-viewing Wide Field-of-view-Sensor
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The Sea-viewing Wide Field-of-view-Sensor

Artist's concept of what the night sky might look like
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Artist's concept of what the night sky might look ...

Massive collision of objects
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Massive collision of objects

What's lighting up the Cigar Galaxy
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What's lighting up the Cigar Galaxy

Intrepid Crater on Mars
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Intrepid Crater on Mars

Star Formation in the DR21 Region
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Star Formation in the DR21 Region

The seasonal occupations of the earth and the signs of the Zodiac governing them
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The seasonal occupations of the earth and the sign...

The effect of the earth's position to the sun in relation to the Horizon
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The effect of the earth's position to the sun in r...

A zodiacal light observed at Osray, France
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A zodiacal light observed at Osray, France

A bolide meteor falling to earth during the day
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A bolide meteor falling to earth during the day

Johannes Hevelius's observatory at Gansk
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Johannes Hevelius's observatory at Gansk

The Pekin Observatory
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The Pekin Observatory

The Einstein Tower, an astrophysical observatory in the Albert Einstein Science Park in Potsdam, Germany
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The Einstein Tower, an astrophysical observatory i...

An astronomer and his assistant observing Mercury, Venus and Jupiter from a roof top observatory in Paris
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An astronomer and his assistant observing Mercury,...

Robert Stirling Newall's25 - inch refractor on a 'German' equatorial mounting
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Robert Stirling Newall's25 - inch refractor on a '...

A small reflecting telescope mounted on a tripod
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A small reflecting telescope mounted on a tripod

The Crossley telescope, a 36-inch
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The Crossley telescope, a 36-inch

The Great Comet of1843
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The Great Comet of1843

Observations of a comet by Athanasius Kircher
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Observations of a comet by Athanasius Kircher

A medal struck to commemorate the Great Comet of1596
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A medal struck to commemorate the Great Comet of15...

A transit instrument, used for finding celestial bodies crossing the meridian, within an observatory
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A transit instrument, used for finding celestial b...

Ole Rømer's use of the eclipses of Jupiter's satellites to measure the speed of light
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Ole Rømer's use of the eclipses of Jupiter's satel...

Portrait of Félix Tisserand
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Portrait of Félix Tisserand

Engraving depicting the days of the week in the order of the supposed distance of the planets from the Earth
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Engraving depicting the days of the week in the or...

Four astrological schemes for alchemical operations
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Four astrological schemes for alchemical operation...

The effect of the earth's position to the sun in relation to the Horizon
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The effect of the earth's position to the sun in r...

Engraving from a 13th century manuscript depicting an astronomy lesson
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Engraving from a 13th century manuscript depicting...

A zodiacal light observed at Osray, France
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A zodiacal light observed at Osray, France

A disintegrating meteor, recorded in the 6th Century
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A disintegrating meteor, recorded in the 6th Centu...

The Osservatorio astronomico di Norimberga
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The Osservatorio astronomico di Norimberga

The Pekin Observatory
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The Pekin Observatory

The siderostat of the horizontal telescope
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The siderostat of the horizontal telescope

The Crossley telescope, a 36-inch
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The Crossley telescope, a 36-inch

Refractor on a 'German' equatorial mounting
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Refractor on a 'German' equatorial mounting

A victim using a street telescope whilst a pickpocket steals from them in London
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A victim using a street telescope whilst a pickpoc...

Photograph of the Crossley telescope, a 36-inch
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Photograph of the Crossley telescope, a 36-inch

The Great Comet of1843
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The Great Comet of1843

Observations from the Johannes Hevelius's observatory at Gansk
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Observations from the Johannes Hevelius's observat...

A medal struck to commemorate the Great Comet of1596
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A medal struck to commemorate the Great Comet of15...

The Great Comet of1811
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The Great Comet of1811

A transit instrument, used for finding celestial bodies crossing the meridian, within an observatory
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A transit instrument, used for finding celestial b...

Ptolemy of Alexandria's map of the then known world Claudius Ptolemy
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Ptolemy of Alexandria's map of the then known worl...

Photographic portrait of Edward Charles Pickering
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Photographic portrait of Edward Charles Pickering

Photograph of Walter Wislicenus
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Photograph of Walter Wislicenus

An armillary sphere
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An armillary sphere

Imaginative reconstruction of Hipparchus in his observatory in Alexandria
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Imaginative reconstruction of Hipparchus in his ob...

An ancient meteor shower shown as swords, pikes, and battle-axes
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An ancient meteor shower shown as swords, pikes, a...

The interior of George Bishop's Observatory
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The interior of George Bishop's Observatory

Jai Singh II's observatory in Delhi, Indian
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Jai Singh II's observatory in Delhi, Indian

Photograph of the interior of the Pulkovo Observatory, Russia, the principal astronomical observatory of the Russian Academy of Sciences
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Photograph of the interior of the Pulkovo Observat...

The United States Naval Observatory, Washington
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The United States Naval Observatory, Washington

The interior of George Bishop's Observatory
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The interior of George Bishop's Observatory

Photograph of the Hooker telescope, a 100-inch reflecting telescope located at the Mount Wilson Observatory, California
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Photograph of the Hooker telescope, a 100-inch ref...

The Great Comet of1843
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The Great Comet of1843

Observations from the Johannes Hevelius's observatory at Gansk
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Observations from the Johannes Hevelius's observat...

Tycho Brahe's planetary system showing at X the comet of1577
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Tycho Brahe's planetary system showing at X the co...

A meridian circle, used to determine altitude of celestial bodies, and a transit instrument, used for finding the celestial bodies crossing the meridian
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A meridian circle, used to determine altitude of c...

John Charles Ryle
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John Charles Ryle

An armillary sphere
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An armillary sphere

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