A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

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

When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

We actually know very little about what's going on inside Uranus and Neptune, causing researchers to propose that these ...

NASA officials respond to reports claiming an exoplanet-hunting balloon crashed in Texas, with the project’s lead scientist explaining what really happened.

Astronomers are investigating a strange class of exoplanets known as eccentric warm Jupiters — massive gas giants that orbit their stars in unexpected, elongated paths. Unlike their close-orbiting ...

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

A new book and documentary from James Bluemel tells the story of the space race so far in photographs, a mix of images from ...

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

We thought we understood planets, but the planetary disk chemistry of far-away XUE 10 is completely changing our conception ...

Planet has announced a new class of imaging satellites that will replace a line of spacecraft dating back to the company’s ...