Astronomers believe fragments of a mysterious lost world are locked in orbit around Mars.
UFO hunters claim that an image taken by NASA’s Mars Curiosity Rover shows an ancient tree stump on the surface of the Red Planet.
A $100 million search for intelligent aliens has come up with some intriguing leads but has revealed no evidence of E.T. so far.
Astronomers have detected an atmosphere around the super Earth-like planet GJ 1132b, a discovery which could help pave the way to finding life outside our solar system.
A car-size asteroid was caught on camera just before it approached within 10,100 miles of Earth today — less than one-twentieth the distance from Earth to the moon.
Citizen scientists have flagged four objects for follow-up study in the hunt for the hypothetical Planet Nine .
The discovery of a new and rarely seen nebula 10 billion light-years away has created a cosmic mystery: What is lighting up this dusty cloud of gases?
Hot gas streaming out from the region around supermassive black holes can experience rapid and extreme changes in temperature.
Thrilled by the discovery of 7 new exoplanets, scientists explain the key ingredients needed for life in the alien system
Astronomers have discovered not one, not two, but seven Earth-sized planets orbiting a star called TRAPPIST-1.