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Cosmic 'Murder Mystery' Solved: Galaxies Are 'Strangled to Death'

Astronomers may have solved the decades-long cosmic murder mystery of what kills most galaxies in the universe: They are strangled to death, so they can no longer create new stars.

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James Webb Space Telescope finds 'extremely red' supermassive black hole growing

The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.

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NASA radar images show stadium-sized asteroid tumbling by Earth during flyby

The asteroid zoomed by Earth at a perfectly safe distance of around 1.8 million miles (2.9 kilometers).

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Radar images reveal damage on Europe's doomed ERS-2 satellite during final orbits

Images show surprise changes to the spacecraft as it interacted with the atmosphere.