The collision began 700 million years ago and sparked a burst of star formation Two galaxies, collectively called Arp 220, merging 250 million light-years away It was created to peer back to the ...

The strange sight is actually two galaxies, with the light of the second warped around the one at the front as a result of its massive gravity.

This story appears in the February 2017 issue of National Geographic magazine. Want to take a cosmic Rorschach test? If you see a pair of bright eyes in the inky depths of space, you’re seeing ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An elliptical galaxy (at center) is seen being wrapped by a spiral galaxy forming a single ...

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Take a good, hard look at the Milky Way Galaxy in the image above - eventually, this view will be completely destroyed by a collision of galactic proportions. Earth itself will survive, but when ...