Extrasolar object may have crashed on Earth in 2014, and it could have carried alien life

Lyrid meteor shower to peak on Earth Day

7 weird facts about black holes

Nearest Earth-like exoplanet might be an ocean world

NASA's Twins Study reveals how a year in space affects the human body

The first image of a black hole is here

What's next for the Event Horizon Telescope?

Israeli moon lander prepares for historic touchdown

We just discovered a scorched planet that outlived its sun

NASA's 'Mars Helicopter' aces tests ahead of historic flight

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Rare 'cosmic telescope' amplifies light from dawn of time