Galaxies "punctuate" the cosmos, the sun shoots a huge flare, a Mars rover reac...

Galaxies "punctuate" the cosmos, the sun shoots a huge flare, a Mars rover reaches its target, and more in the week's best space pictures.


Space Pictures This Week: Mars Rover, Galaxy Smashup, More -- National Geographic
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Two galaxies in the early stages of a cosmic collision form a stellar exclamation mark in a newly released picture that combines data from two NASA telescopes.

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