The region where the gravitational influence of Earth is the dominant force, is called the Hill Sphere. This extends up to ...

Related reading: Earth's temporary extra satellites may have an unexpected origin.

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...

Over 14,000 pieces of junk are clogging up low Earth orbit, but this number could be reduced by a new invention that involves ...

Space has a trash problem, with defunct satellites, rockets, and smaller broken bits orbiting Earth at high speeds. The ...

The Moon, our constant celestial companion, is drifting away from Earth at a slow but measurable rate. According to a ...

Experts have warned that NASA's asteroid deflection system could inadvertently send one towards Earth. The Double Asteroid ...

New research warns that if we don't hit an asteroid in exactly the right spot, it could end up on a collision course with ...

This artist's concept depicts the NISAR satellite in orbit over central and Northern California. - Indian Space Research Organization A first-of-its-kind satellite has launched to track nearly ...

When engineers at a control center in Turin, Italy, sent a faint radio signal into space, they set off a world-first ...

Just like litter is a big problem on Earth, space junk is cluttering up outer space. To dispose of this junk, a Tohoku University researcher demonstrated the utility of a special plasma thruster.