There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Astronomers observe for the first time the actual motion of spirals in a protoplanetary disk, revealing gravitational ...

Using the European Southern Observatory 's (ESO) Very Large Telescope (VLT), astronomers have caught it pulling in gas and ...

IT IS ONE of the biggest mysteries in cosmology—and getting bigger all the time. Ever since Edwin Hubble, an American astronomer, published observations of distant galaxies in 1929, scientists have ...

How can we figure out if the planet is actually there? And will it even be bright enough to see? Here are some answers to these and other pressing questions. Others aren’t quite so sure. “I’m very ...

Earth’s turbulent atmosphere makes it hard to detect new planets from the ground. Astronomer Rebecca Jensen-Clem is working ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

NEW YORK (AP) — Six planets are hanging out in the sky this month in what’s known as a planetary parade. Catch the spectacle while you can because it’s the last one of the year. These linkups happen ...