Space

Existence of UFOs 'beyond a reasonable doubt,' according to Pentagon official

Our solar system might have formed in the bubbles around a larger, long-dead star

Bizarre cigar-shaped asteroid is from another star and unlike anything seen before

Hubble captures stunning galactic collision

Artificial intelligence just helped NASA find our solar system's mini-me

What elements are inside a supernova?

Jupiter's Great Red Spot is deeper than Earth's oceans

Best out-of-this-world space stories of 2017

Woman's scorched retina highlights danger of solar eclipse

NASA discovers unique exoplanet with 'smothering' atmosphere

Mysterious high-speed hydrogen clouds are hovering around the Milky Way

Scientist unveils plan to seed another solar system with life from Earth

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