The case of mistaken identity was quickly resolved, but astronomers say it shows the need for transparency around craft in ...

Planets with suns like Wolf 359 are subject to huge blasts of radiation that raise questions about their long-term habitability.

In this episode, Dave Eicher invites you to go out and watch a close pairing of two naked-eye planets: Venus and Saturn. The ...

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early ...

Plus: Saturn’s moon Iapetus is visible, our Moon passes the bright star Spica, and Mars skims south of Pollux in Gemini in ...

Because the period of an object does not depend on its mass, comets’ orbital periods remain unchanged due to mass loss.

This rare quasar with spiral arms could help astronomers understand how supermassive black holes feed and grow.

The lanes and clouds of dust in the star-forming Orion Nebula (M42) reveal a dark dimension to this familiar object.

After exploding, the craft sent blazing debris across the sky and forced multiple aircraft flying over and near the Caribbean ...

The Red Planet reaches its best position all year this week on January 15. Here’s how and when to get out and see it.

These massive currents carry material on a journey through and around star-forming galaxies before they settle and form stars ...

Since 2018, we've seen 1ES 1927+654 generate jets in real time and found it may have a lone white dwarf orbiting near the ...