There are also exoplanets with extremely varied sizes. Some are much larger than Jupiter, which is already a giant in our ...

NASA has found “the clearest sign yet” that life once existed on Mars, the agency announced on Wednesday.

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system.

The latest images of comet 3I/ATLAS are in, delivering a glorious view of the interstellar object's burgeoning tail, courtesy ...

The cosmos is a vast and fascinating expanse, filled with curiosities. Meteorites, remnants of this cosmic expanse, hurtle ...

To celebrate the magazine’s anniversary, we’re revisiting some of our favorite past cover stories and celebrity quotes.