A mysterious world 4,000 times more massive than the Earth has been found lurking 22,000 light years away.
Observations of our closest neighboring star have revealed the possible presence of multiple planets.
The planet, which is much too big for its star, defies our current understanding of planetary formation.
The Mars 2020 rover will be equipped with a wide assortment of cameras for surveying the Red Planet.
Astronomers have observed an extrasolar planet with some of the weirdest weather conditions ever seen.
Planetary scientist Alan Stern has suggested that some civilizations may live below a planet's surface.
NASA scientists have revealed the existence of an invisible magnetic tail trailing behind the Red Planet.
The prototype thruster could one day propel the first Mars astronauts all the way to the Red Planet.
Scientists have developed a computer simulation that defines the exact orbit and behavior of Planet Nine.
NASA's Mars Reconnaissance Orbiter has identified the site of an ancient lake on the Red Planet's surface.
Scientists believe that wind farms in the North Atlantic could provide enough electricity to power the world.
The SpaceX CEO is set to reveal more about his plans to colonize the Red Planet at an event on Friday.
Rumors of another apocalyptic collision with the mythical planet Nibiru have been circulating the Internet.
Venus, Mars and Mercury will all be temporarily disappearing behind the Moon over the next few hours.
A 'hot Jupiter' world situated 1,400 light years away reflects so little light that it appears pitch black.
For the first time, astronomers have picked up signs of titanium oxide on a distant extrasolar world.
Astronomers have identified nine planets from which intelligent aliens could potentially be watching us.
Researchers in the US have come up with a revised classification system to help categorize our planet.
The mysterious unmanned shuttle has embarked on yet another mission that nobody knows anything about.
Four of the seven planets in the Trappist-1 system are thought to be home to large amounts of water.