By now, you're probably used to hearing about potentially habitable worlds orbiting other stars. But that "potentially habitable" part may come with more caveats than you might think.

The Event Horizon Telescope's image of M87* is so good that theorists thought it was too good to be true.

Now that Opportunity's mission is complete, many wistfully lament about "bringing our robot home." There's just one problem: it's already home.

Scientists think they found a time capsule from Earth's earliest days buried just under the Moon's surface for the last 4.1 billion years.

A binary system observed by ALMA isn't wonky, it's the first example of an anomaly we only thought was possible until we saw it with our own eyes: a polar protoplanetary disk.

A nearby baby star has been discovered with a warped protoplanetary disk — a feature that may reveal the true nature of the solar system's planetary misalignments

New observations of the center of our galaxy have, for the first time, revealed hotspots in the disk of chaotic gas orbiting our Milky Way's supermassive black hole.

We think of water as the most essential ingredient for life, but as a recent discovery shows, it can also be toxic to living things in alien environments