The Sun, our nearest celestial neighbor, is undeniably a star, not a planet, as centuries of astronomical observations have confirmed. However, the boundaries of celestial definitions are continually ...

Tossing a bad guy into the Sun sounds simple enough, but orbital mechanics make it a far trickier task than you'd expect.

NORFOLK, Va. — Each planet in our solar system takes a different amount of time to complete one orbit around the sun. For example, Mercury, being closest to the sun, takes just 88 Earth days to ...

We live in changing times. While we once flippantly threw villains to the lions, now we seek to fire them into the sun.

Roaming planets, untied to a solar system or stellar orbit, were recently found by a team of astronomers, according to a report in Nature. This artist’s conception illustrates a Jupiter-like planet ...

This image from a simulation of atmospheric flow shows temperature patterns on one of the newly discovered planets (61Virb), which is hot enough that it glows with its own thermal emission. A movie of ...

Astronomers have finally found an asteroid keeping pace with Saturn in its orbit around the sun. Such objects, called Trojan asteroids, are already known for the other three giant planets. “Saturn was ...

Researchers present strong evidence for a planet circling two brown dwarfs on a near polar path. The orbit is tilted almost 90 degrees to the pair’s motion. The system lies about 120 light-years from ...