The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a ...

NASA has shared details of what to look out for in the night sky this month, with the moon appearing alongside a parade of planets.

"This is the most powerful volcanic event ever recorded on the most volcanic world in our solar system — so that's really saying something." ...

NASA’s Juno spacecraft has uncovered an immense volcanic hot spot on Jupiter’s moon Io, surpassing any previously recorded ...

NASA's OSIRIS-REx mission discovered molecules vital to life and a history of saltwater on asteroid Bennu. The findings ...

All forms of Earth life have specific chemicals in their makeup, such as amino acids and sugars. Scientists have known that ...

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...

An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an ...

NASA scientists found amino acids, key minerals, and nucleobases for DNA in samples from the OSIRIS-REx asteroid mission.

Rock and dust samples from the Bennu asteroid contain molecules that are the "key to life" on Earth, NASA officials announced ...