The Key to Better Sleep in Space? Some Nice, Colorful Light

It's hard to get a good night's sleep in orbit. Astronauts on the International Space Station see a sunrise every 90 minutes or so, which leads to some seriously messed-up internal clocks. Sleeping pills help a bit, but now scientists think they can game circadian rhythms more naturally—and effectively—with new light bulbs.


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.


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).


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.