

Red Planet Transportation: What will astronaut drive on Mars?
StartFragment In The Martian, fictional astronaut Mark Watney rides around Mars in a badass, futuristic-looking rover. Well, like most...


String Theory Simplified
StartFragment Super String Theory Simplified You're here because you are sick of hearing the phrase at every turn, on every television...


Mysterious Star Pulses May Be Alien Signals, Study Claims
StartFragment Strange pulses of cosmic light might be signals from hundreds of different alien civilizations — or just the latest false...


Some Alien Worlds Could Have 'Too Much' Water for Life
StartFragment As with everything in life, too much of a good thing can be bad — and that logic now seems to apply to alien life, too....


What Is the Biggest Thing in the Universe?
StartFragment In space, we're used to dealing with large distances and objects. In the cosmic scheme of things, Earth is rather small....


This Blue Alien Planet Is Not at All Earth-Like
StartFragment The alien planet HD 189733b is a beautiful blue dot in a sea of inky blackness, just like Earth. But that's where the...


What's It Like On Our Neighbor, Proxima b?
StartFragment The newfound planet Proxima b is the closest planet outside our solar system ever discovered, and scientists think it might...


Why Did It Take So Long to Find Proxima b?
StartFragment Over the past two decades, astronomers have discovered more than 3,200 exoplanets, or planets outside our solar system....


Found! Potentially Earth-Like Planet at Proxima Centauri Is Closest Ever
The star closest to the sun hosts a planet that may be very much like Earth, a new study reports. Astronomers have discovered a roughly...


Alien Megastructure? 'Tabby's Star' Continues to Baffle Scientists
StartFragment Nearly a year after first making headlines around the world, "Tabby's star" is still guarding its secrets. In September...