The secret behind how the International Space Station remains in orbit can be traced all the way back to the genius of Sir ...

Current assumptions place the newly formed Moon at just around five Earth radii in altitude, or 20,000 miles (32,000 kilometers) above Earth ... Because the force of gravity is stronger at ...

NASA has been monitoring a strange anomaly in Earth's magnetic field: a giant region of lower magnetic intensity in the skies ...

If there's one thing everybody knows about space, it's that there's no gravity once you leave the Earth's atmosphere ...

will skim Earth's atmosphere, passing only about 220 miles (360 kilometers) above the surface. This close flyby will result in a "gravity assist," putting the spacecraft on a new trajectory that ...