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Sky entrance
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Partial solar eclipse from the lowest point of Iran
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The Annotated Galactic Center
The center of our Milky Way galaxy can be found some 26,000 light-years away toward the constellation Sagittarius.
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The Iris Nebula in a Field of Dust
These cosmic dust clouds drift some 1,300 light-years away along the fertile starfields of the constellation Cepheus.
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M31: The Andromeda Galaxy
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Perseid Meteors over Slovakia
Tonight is a good night to see meteors.
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A Total Solar Eclipse Reflected
If you saw a total solar eclipse, would you do a double-take?
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HDR: Earth's Circular Shadow on the Moon
What could create such a large circular shadow on the Moon?
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Moonquakes Surprisingly Common
Why are there so many moonquakes?
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Apollo 11 Launches Humans to the Moon
Everybody saw the Moon. Nobody had ever been there.
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