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 ...

For comparison, Earth's orbit has an eccentricity of 0.0167, meaning it's nearly circular. Saturn and Mars have eccentricities of 0.054 and 0.093, respectively. Pluto's orbit is tilted 17.4 degrees, ...

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 ...

The remains of more than 160 deceased people reached orbit on a spacecraft that hitched a ride on a SpaceX rocket. And it's not the first time that a company from Texas has worked with a launch ...

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 ...