Mercury takes only 88 Earth days to orbit the sun.

SpaceX is scheduled to launch its Maxar 3 mission, with two high-resolution commercial satellites on board, from the Kennedy ...

However, the large eccentricity means its orbit ranges from as far as 2 astronomical units (300 million km/186 million miles — i.e. twice the Earth–sun distance) from its star to as close as 0 ...

How fast is Earth moving? The sun doesn't sit idly in the center of these ellipses at equal distance from their farthest points. It actually follows its own tiny elliptical orbit around what is ...

BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.

The Blue Ghost lunar lander, built by the Texas-based company Firefly Aerospace for NASA, launched to space on Jan. 15, and ...

A chunk of space rock that visited near Earth's orbit last year was widely called a "mini-moon," a nickname that was more ...