The strange blend of surface chemistry on Nix and Hydra raises big question about the evolution of the Pluto system.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars.

A new paper discusses the possible existence of an unseen planet in the outer solar system, the so-called "Planet X" or ...

For two decades now, the iconic twin Voyager spacecraft have been quietly overturning everything we thought we knew about the ...

The planets curated a unique holiday playlist, each reflecting their distinct energies. From the Sun's vibrant "Feliz Navidad" to Pluto's profound "Ca ...

Nov. 25, 2024 — A new computer model can be used to detect and measure interior oceans on the ice covered moons of Uranus. The model works by analyzing orbital wobbles that would be visible from ...

In January and February 2025, a six-planet alignment will grace the night sky, offering a celestial spectacle for skywatchers ...

As large parts of the Northern Hemisphere play the game of wondering if it will snow for Christmas, we thought it might be ...

When I asked readers on social media for suggestions about the coolest things they’ve seen in spaceflight during the last 25 ...

Observations from the James Webb Space Telescope have shown carbon dioxide on the surface of Jupiter’s icy moon Europa – that’s a good sign for the habitability of its buried seas ...

The Cejka Planetarium on the second floor of John J. and Char Kopchick Hall on the Indiana University of Pennsylvania campus ...

Volunteers at the decades-old Dwingeloo radio telescope in Drenthe picked up a signal from the Voyager 1 space probe, which ...