Astronomy

Kadenyuk, Leonid

Kadenyuk, Leonid

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Ukrainian cosmonaut

Camelopardalis

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astronomy

Apollo 11

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History, Mission, Landing, Astronauts, Pictures, Spacecraft, & Facts

Delta

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launch vehicle

Helios

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space probe

Duque, Pedro

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Biography & Facts

Arecibo Observatory

Arecibo Observatory

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Telescope, Collapse, Discoveries, & Facts

Royal Greenwich Observatory

Royal Greenwich Observatory

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observatory, Greenwich, London

Garriott, Owen

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American astronaut

R-7

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missile and launch vehicle

Astrobiology

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science

Ariel

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satellite

Hour Angle

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astronomy

Autumnal Equinox

Autumnal Equinox

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Dates, & Facts

Tycho’s Nova

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astronomy

Equinox

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Dates, & Facts

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