The discovery of a new celestial object in the Earth's neighborhood has created a buzz online asking whether the planet now ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

Researchers are studying eccentric warm Jupiters, giant exoplanets that follow odd, elongated orbits unlike anything in our solar system.

KENNEDY SPACE CENTER — SpaceX’s Falcon 9 rocket pierced the Wednesday morning sky as it launched three spacecraft from NASA and NOAA that will study the solar system’s “bubble,” collect information on ...

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...

Scientists say Earth’s northern half is darkening faster than the south, reflecting less sunlight back into space and soaking ...

Interstellar comet 3I/ATLAS is just the third such object ever confirmed to have entered our solar system. It has attracted ...

A second deep space antenna opened in a tiny monastic town in Western Australia could help unlock the secrets of the universe ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...