Two spiral galaxies are smooshing into each other in this image taken by the El Sauce Observatory in Chile. The galaxies will likely continue this interaction for tens of millions of years.
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NASA's Hubble Space Telescope found definitive evidence of a dwarf galaxy merging with the Milky Way just 2 billion years after the Big Bang.
Don't look up.
The cosmic accelerator can push protons beyond one quadrillion electric volts.
The observatory recently began its 10-year survey of the southern sky using the world's largest digital camera.
The otherwise invisible object revealed itself with a flash of light as it munched on its stellar dinner.
