Space is a big, lonely place, so it"s nice to know we have neighbors. The pictured Andromeda galaxy is our Milky Way"s closest neighbor—right next door at 2.5 million light-years away. Our cordial relationship with Andromeda goes back about 10 billion years to when both galaxies were still forming. But trouble is brewing: Andromeda is on a collision course with the Milky Way, due for impact in 4 billion years. This neighborhood"s about to get rough…
Hey neighbor, it s World Space Week!
Today in History
More Desktop Wallpapers:
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A cozy winter village
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Natural Bridges State Beach in Santa Cruz, California
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Welcome to El Cervantino
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Birch trees, Drammen, Norway
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Agüero, Huesca province, Spain
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Cinco de Mayo
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Did it see its shadow?
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Swimming into the season
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A crush in Lavaux
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Lunar eclipse
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Happy Thanksgiving
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Looking back at Yellowstone, 30 years after the fires
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Mediterranean red sea stars
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An old celebration for a new season
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International Day of the Tropics
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Keep shining
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The cycle begins anew
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Can you see the family resemblance?
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Great Backyard Bird Count
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Happy trails for the 21st century
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Light show in the forest
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Let s get lost
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International Nurses Day
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Take the plunge into 2021
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Honoring our fallen heroes
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Punakaiki on South Island, New Zealand
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The wild heart of Tasmania
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Misool Island, Indonesia
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Saint Dwynwen s Day
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Here there be dragons