A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

High radiation during a time of frenzied star formation in the Milky Way left one stellar population with few chances to form planets, a study reports.

An exoplanet is a planet outside our solar system that usually orbits a star in our galaxy. More than 7,000 have been found ...

At just over 20,000 mph, experts say they're the fastest of their kind on any known planet. Find out more here.

The record-breaking winds are circling the nearby "puffy" exoplanet WASP-127b, and are traveling six times faster than the ...

Venus, Jupiter, Mars, Saturn, Neptune and Uranus — are likely to align in the night sky by the end of January, according to ...

A rare parade of planets will light up the night sky throughout January. Six planets will be in alignment for the rest of the ...

Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many bright planets at once.

In Earth’s upper atmosphere, a fast-moving band of air called the jet stream blows with winds of more than 442kph, but they ...