Karl Tate

Scientists say an enormous cluster of quasars in the distant universe is larger than should be possible.

The huge asteroid will pass close, but scientists say it won't hit us.

Planet KOI 172.02 has yet to be confirmed, but it could potentially have water and life.

Practically all sun-like stars have planets, and one in six has a planet the size of Earth, scientists say.

See how solar flares, sun storms and huge eruptions from the sun work in this SPACE.com infographic.

Being developed for missions in 2015 and beyond, the Z-1 could be used for exploring the moon and Mars.

The remains of at least 71 space vehicles litter the surface of the moon.

The private company announced commercial passenger flights to the moon starting in 2020.

Billions of tons of water ice hides in frozen pits at the north pole of the hot planet Mercury.

Pluto was demoted to dwarf planet status in 2006, joining Eris, Haumea, Makemake and Ceres. All the dwarf planets are tinier than Earth's moon.

The planet HD 40307g, 44 light-years away, is seven times the Earth's mass and could have liquid water on its surface.

See how different types of solar flares stack up in this SPACE.com infographic.

Astronomers using the Kepler Space Observatory have spotted a record five planets crammed in close to their parent star, 1,100 light-years from Earth.

The daredevil's jump from 120,000 feet altitude requires the use of a space suit due to the low temperature and thin air.

See inside SpaceX's private Dragon space capsule and Falcon 9 rockets.

On Oct. 4, 1957, the Soviet Union stunned the world with its surprise launch of Sputnik-1.

NASA's Mars rover Curiosity has discovered dried-up signs of an ancient stream on the Martian surface.

Astronomers searching for another Earth are getting closer, thanks to recent discoveries by the Kepler space telescope.

Thought to be called "blue" after an old english term meaning "betrayer," a Blue Moon is an extra full moon that occurs due to a quirk of the calendar.

For the first time, scientists studying data from the Kepler Space Telescope have found multiple planets orbiting a binary star.

See how twin NASA spacecraft will look inside Earth's radiation belts in this SPACE.com infographic.

The mountain-climbing rover heads for Mount Sharp, rising 3 miles (5 kilometers) above Gale Crater.

Dwarf planet Pluto has one giant moon, Charon, but now is known to have four more tiny satellites.

Learn all about Pluto's weirdly eccentric orbit, four moons and more in this SPACE.com infographic.