"With an orbital period of 570 days, it is a relatively cold gas giant planet," said Guðmundur Stefánsson of the University ...

This effect occurs because the planets orbit the Sun along a path determined by gravity, known as the “ecliptic.” This imaginary line makes the planets seem closer, even though they are far apart.

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

It actually follows its own tiny elliptical orbit around what is called the center of gravity (the barycenter) of the system, the sun and the orbiting planets. This barycenter is usually not equal ...

Astronomers may have found a star racing through our galaxy at an incredible speed—dragging a planet along with it! If ...

Super Earth is in crisis as the Meridian Singularity wipes out Angel's Venture, killing 480,000—now five more planets are in its deadly path.