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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...

Glowing stellar nursery
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Glowing stellar nursery

Quinghai, the largest lake in China
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Quinghai, the largest lake in China

The Crab Nebula
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The Crab Nebula

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

War bonds
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War bonds

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

New silver medallist in the central region of our Milky Way
ARP15A02_072

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

Kepler's Supernova Remnant
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Kepler's Supernova Remnant

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

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

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

A magic telescope
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A magic telescope

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 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

Sir Martin Ryle
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Sir Martin Ryle

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

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...

John Charles Ryle
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John Charles Ryle

The interior of the Kuffner Observatory, is one of two telescope-equipped public astronomical observatories situated in Austria's capital, Vienna
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The interior of the Kuffner Observatory, is one of...

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

A refractor with a focal length of120 inches being used by Henry Lawson
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A refractor with a focal length of120 inches being...

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

Giuseppe Piazzi's refracting telescope with achromatic lens built by Jesse Ramsden
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Giuseppe Piazzi's refracting telescope with achrom...

Portrait of William Parsons, 3rd Earl of Rosse
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Portrait of William Parsons, 3rd Earl of Rosse

The arrangement of lenses in Johannes Kepler's telescope
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The arrangement of lenses in Johannes Kepler's tel...

Frontispiece of Giuseppe Piazzi's catalogue of star positions
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Frontispiece of Giuseppe Piazzi's catalogue of sta...

Portrait of William Parsons, 3rd Earl of Rosse
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Portrait of William Parsons, 3rd Earl of Rosse

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

Children looking at the night sky with a portable refractor
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Children looking at the night sky with a portable ...

The arrangement of lenses in Galileo Galilei's telescope
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The arrangement of lenses in Galileo Galilei's tel...

Portrait of William Parsons, 3rd Earl of Rosse
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Portrait of William Parsons, 3rd Earl of Rosse

Photograph of the interior of the Royal Observatory, Greenwich, an observatory situated on a hill in Greenwich Park, overlooking the River Thames
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Photograph of the interior of the Royal Observator...

The photographic telescope within the Paris Observatory
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The photographic telescope within the Paris Observ...

A 23-inch refractor built by Alvan Clark
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A 23-inch refractor built by Alvan Clark

A refracting telescope built by Joseph von Fraunhofer
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A refracting telescope built by Joseph von Fraunho...

A Newtonian telescope a type of reflecting telescope invented by the British scientist Sir Isaac Newton
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A Newtonian telescope a type of reflecting telesco...

The photographic telescope within the Paris Observatory
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The photographic telescope within the Paris Observ...

A 23-inch refractor built by Alvan Clark
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A 23-inch refractor built by Alvan Clark

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

A refracting telescope on an iron stand and fitted with a finder
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A refracting telescope on an iron stand and fitted...

Left: the great nebula in Orion and Right: The Trifid Nebula of Sagittarius
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Left: the great nebula in Orion and Right: The Tri...

Children looking at the night sky with a portable refractor
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Children looking at the night sky with a portable ...

Pierre Janssen
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Pierre Janssen

Early 20th century telescope image of a nebula
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Early 20th century telescope image of a nebula

The telescope of an observatory in Paris
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The telescope of an observatory in Paris

The Craig telescope, a large telescope built in the 1850s, and while much larger than previous refracting telescopes
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The Craig telescope, a large telescope built in th...

A street telescope in London
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A street telescope in London

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,...

The testing of glass for the 26-inch refractor built by Alvan Clark
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The testing of glass for the 26-inch refractor bui...

A street telescope in London
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A street telescope in London

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,...

Photograph of the Tower Telescope used at Mt Wilson Observatory, California
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Photograph of the Tower Telescope used at Mt Wilso...

A Zenith telescope, a type of telescope designed to point straight up at or near the Zenith
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A Zenith telescope, a type of telescope designed t...

A small refractor mounted on a wheeled frame
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A small refractor mounted on a wheeled frame

Photograph of the interior of the Royal Observatory, Greenwich, an observatory situated on a hill in Greenwich Park, overlooking the River Thames
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Photograph of the interior of the Royal Observator...

Illustration depicting ancient astronomer using 'sighting tubes' to observe the sky
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Illustration depicting ancient astronomer using 's...

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,...

Reflecting telescopes: 1
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Reflecting telescopes: 1

The exterior of the Paris Observatory
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The exterior of the Paris Observatory

Photograph of The Yapp Dome and Telescope, presented by William Johnstone Yapp
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Photograph of The Yapp Dome and Telescope, present...

The exterior of the Paris Observatory
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The exterior of the Paris Observatory

These shape-shifting galaxies
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These shape-shifting galaxies

Reflecting telescope, Astrophysical Observatory, British Columbia, Canada.
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Reflecting telescope, Astrophysical Observatory, B...

NASA's Spitzer Space Telescope infrared view of the famous galaxy Messier 31, also known as Andromeda
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NASA's Spitzer Space Telescope infrared view of th...

Butterfly shape emerges from Stellar Demise in Planetary Nebula NGC 6302
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Butterfly shape emerges from Stellar Demise in Pla...

Adolf Hitler with a young boy at his mountain retreat
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Adolf Hitler with a young boy at his mountain retr...

Illustration from a book depicting the Captain and a young boy
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Illustration from a book depicting the Captain and...

Photograph of a the Milky Way Galaxy
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Photograph of a the Milky Way Galaxy

Figures of two men executed during the French revolution.
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Figures of two men executed during the French revo...

Oranda, Amerika, Igirisu (Dutch, American, English) by Hiroshige Utagawa
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Oranda, Amerika, Igirisu (Dutch, American, English...

Paris Observatory in the time of Louis XIV
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Paris Observatory in the time of Louis XIV

Radcliffe Observatory, Oxford, England, 1814
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Radcliffe Observatory, Oxford, England, 1814

Albert Einstein
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Albert Einstein

Graphic by Randolph Caldecott
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Graphic by Randolph Caldecott

Prince Albert
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Prince Albert

Robert Hooke's proposal for an aerial telegraph
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Robert Hooke's proposal for an aerial telegraph

Composite image of the Large Magellanic Cloud
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Composite image of the Large Magellanic Cloud

A false-colour image of Cassiopeia A
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A false-colour image of Cassiopeia A

The false-colour Spitzer images reveal a different side of the Trifid Nebula
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The false-colour Spitzer images reveal a different...

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