Conventional images of the Earth and the moon place them close together, the moon hovering, seemingly, right over our planet's shoulder. Of course, this isn't accurate; we know just from looking at ...

"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure ...

Remember those textbook diagrams of the solar system or the foam planets that hung in a tidy row from the ceiling of your grade school classroom? All lies. A sprawling new installation at the ...

Humanity has walked on the Moon and sent probes to the edges of the solar system but traveling to another star is a challenge ...

For many, space travel is unrealistic – spaceships are expensive, and interplanetary exploration doesn’t fit in with a 9-to-5 ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Astronomers discovered a planetoid orbiting the sun further than any known object in the solar system. Called "Farfarout," the object orbits the sun every 1,000 years. Objects like Farfarout could ...

NASA’s Pleiades supercomputer has provided fresh insights into the Oort cloud – a vast, theoretical spherical shell of icy ...