While our Sun prefers to go solo, many other stars are parts of binary systems, with a pair of stars gravitationally bound to each other. In some cases, the stars are far enough apart that planets can ...

Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as the solar system's eight planets; and its orbit is both highly elliptical ...

Humans have been exploring the space around our planet for decades now, and as it always happens when our species does something for a long enough period of time, a sort of routine settled in. Like, ...

Saturday will bring us a supermoon, an astronomical phenomenon during which the moon is both full and at its closet point to Earth in its orbit. Meaning: the moon's gonna be really freaking big ...

A SpaceX spacecraft carrying four international astronauts is on a pioneering journey circling Earth over its poles after launching Monday night from Florida. Financed and led by cryptocurrency ...

HELSINKI — China has sent several small spacecraft into specialized lunar and cislunar orbits to test communications, navigation and orbital dynamics for planned Earth-moon infrastructure. China’s DRO ...

Old rocket parts and decommissioned satellites are whizzing around in low Earth orbit, where they risk colliding with the ...