If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

Galaxies speckle the heavens like stars in a stunning new photo of the deep and distant universe.

Astronomers using the James Webb Space Telescope have directly detected the faint glow of a planet that’s colder than any ...

They reveal a whole new level of detail in these planet-forming systems. Breakthroughs, discoveries, and DIY tips sent every ...

In 2020, astronomers detected WD 1856+534 b, a gas giant that orbits a star 81 light-years from Earth. This exoplanet, which ...