The enchanting dunescape stretches over 43 miles (70 km) along the coast and over 30 miles (50 km) inland. Lençois translates ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Astronomers have discovered a large Earth-like planet orbiting a distant star that could be home to alien life. The exoplanet ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

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

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

Researchers say there’s a 1.3 percent chance that the space rock 2024 YR4 could strike our planet — but not until December ...

Astronomers have found some pretty wild exoplanets. Some are balls of lava the temperature of hell, one is partially made of ...

Exciting February sky events include Venus at its brightest and closest to Earth, the moon occulting the Pleiades, and a parade of planets in the post-sunset sky.