A rare planet has been discovered, and it doesn’t seem like a stop anyone would want to make on an intergalactic cruise.
Some alien worlds might look like they're capable of hosting life as we know it on Earth, but in reality, these "mirage planets" might have burned away those chances for life, scientists think.
The days are numbered for two newly discovered dead stars locked in a spinning spiral of doom that will eventually lead to a catastrophic collision that triggers a supernova explosion, astronomers...
In 1938, Orson Welles narrated a radio broadcast of "War of the Worlds" as a series of simulated radio bulletins of what was happening in real time as Martians arrived on our home planet.
NASA's Hubble Space Telescope has captured three of Jupiter's moons marching across the huge planet's disc, a stunning sight that happens only once or twice every 10 years.
Interstellar travelers who find themselves entering a black hole might want to have some air sickness pills handy. According to a report in an upcoming “Physical Review Letters,” researchers from...
Scientists working with the long-lived Hubble Space Telescope say that the intrepid eye on the sky could continue functioning through 2020, and even beyond.
Some Earthlike alien worlds may have looked a lot more like miniature versions of Neptune when they were born.