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Be an Explorer

Giant Rocks and Snowballs
Giant Rocks and Snowballs
A new comet is speeding in from the dark. If it comes as a surprise to you, well, join the crowd.
Bottomless Pits
Bottomless Pits
Andrea Ghez is getting very close to the black hole in the center of our Milky Way galaxy.
Mysterious Moons
Moons of Mystery
Lava on Io, water on Europa, boulders on Callisto — where's a geologist to start?
Star Nurseries
Star Nurseries
A new star is born every year in our galaxy. New year, new star — that's the average.
Other Worlds
Other Worlds
"When I look at the stars at night … to me that means billions of opportunities for life," says Debra Fischer.
Hubble's Greatest Hits

Take a peek at some of the beautiful and astonishing photos taken by the Hubble Space Telescope. Then vote for your favorite.

 
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Go Deeper
Need More Space?
Need More Space?
Visit our home for space content, the Discovery Channel Space Guide.
Explore More
SpaceRef.com
SpaceRef
Your complete space reference site: news, directories, photo galleries and more.

Pictures (Top): NASA/JPL/Caltech (2) | L. Ferrarese (Johns Hopkins University) and NASA |
Pictures (Main): Corbis | L. Ferrarese (Johns Hopkins University) and NASA | NASA/JPL/Caltech | J.P. Harrington and K.J. Borkowski (University of Maryland), and NASA | UK Schmidt Telescope, Skyview; Royal Observatory Edinburgh, Anglo-Australian Observatory, and AURA |

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