At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

Among other things, the James Webb Space Telescope is designed to get us closer to finding habitable worlds around faraway ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

The coldest and densest molecular gas clouds in the interstellar medium can have temperatures of 10 K (-505 °F/-263 °C), ...

Scientists discover asteroid spinning once every 1.88 minutes—the fastest rotation ever found for a large space rock. Five ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

Scientists have discovered a “record-breaking” asteroid that is nearly the size of eight football fields. The object, known ...

In the vast calm of the solar system, planetary orbits often appear orderly, stable, and insulated from the broader mechanics ...

"Do we react for everything which has a chance to reach the ground? Or do we react only for the very large objects, as we did ...

Glacial earthquakes are rocking the Doomsday Glacier in Antarctica. Glacial earthquakes are a special type of earthquake ...

An international team of researchers pointed the largest single-dish radio telescope in the world at 3I/ATLAS.