A NASA probe that's expected to leave the solar system after it finishes its mission at Pluto and beyond will carry a message intended for any alien life-form that comes across it in the far future.
Astronomers aren't being poetic when they say this star is a diamond.
Scientists are as giddy as an enchanted snowman, as summer solstice approaches on Titan, Saturn's largest moon
Scientists have just discovered the "Godzilla of Earths" — a new type of huge and rocky alien world about 560 light-years from Earth.
There are more than 170 moons in our solar system, but a few stand out.
Now we’re detecting dozens of exoplanets within the habitable zones of their stars — and even one world that has similar characteristics as Earth — the next big question will be: do any of these...
A brown dwarf as cold as the North Pole has been discovered lurking remarkably close to our solar system, and it appears to be the coldest of its kind yet found, scientists say.
While scientists believe the universe began with a Big Bang, most Americans put a big question mark on the concept, an Associated Press-GfK poll found.