Celestial Splendor

Explore the celestial collision near HD 172555, where a moon-sized body impacted a Mercury-sized planet. Discover more!

BySheril Kirshenbaum
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Over at National Geographic, a scene around HD 172555 where scientists think a celestial collision took place a few thousand years ago!

Find more space photos here and check out the newly discovered gigantic suicidal planet...

A celestial body about the size of our moon collides with a planet roughly the size of Mercury in a new artist's conception.

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