When most people imagine traveling to space, they picture breathtaking, colorful swirls or sparkly stars like the images ...

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

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?

Planets that orbit white dwarf stars should be too hot to host alien life, theories suggest. But a new study accounting for ...

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

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...