The U.S. planetary science community is sounding the alarm about plans to discard a nuclear technology that has powered ...

If Jupiter swallowed every planet in the solar system, it would become an enormous cosmic giant far larger than anything else ...

These linkups happen when several planets appear to line up in the night sky at once. Such parades are fairly common, ...

A new study on Uranus has found it is hotter than we thought, prompting scientists to suggest we should return to the ice ...

The solar system’s smallest planet is just now becoming visible before dawn. Bright Jupiter and Venus point the way.

August 2025 showcases a breathtaking celestial display, with multiple planets forming a rare alignment. See what planets are ...