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

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

But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...

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

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

Conservative critics of renewable energy keep claiming that solar and wind are useless at night and during calm skies. That’s ...

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