Learn why famous meteor showers like the Perseids and Leonids occur every year.
The planet HD 40307g, 44 light-years away, is seven times the Earth's mass and could have liquid water on its surface.
Astronomers have discovered an Earth-size planet orbiting one of the nearest stars to our sun: Alpha Centauri B.
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.
SpaceShipTwo will carry six passengers up past 328,000 feet altitude (100 kilometers), the point where astronaut wings are awarded.
The daredevil's jump from 120,000 feet altitude requires the use of a space suit due to the low temperature and thin air.
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.
See how the historic first manned moon landing worked in this SPACE.com infographic about Apollo 11.
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.
From July through August, planet groupings in the pre-dawn and dusk skies will impress skywatchers around the world.
Our home in space is a vast galaxy containing 400 billion suns, at least that many planets, and a 4-billion-solar-mass black hole at the center.
From its station near Venus’ orbit, Sentinel will have a clear view of Earth’s orbit while looking away from the of the sun.
Two planets in the newly discovered Kepler-36 system approach each other so closely, one appears three times the diameter of Earth's moon in the other's sky.
China's three-person Shenzhou 9 crew will test techniques for docking and inhabiting the Tiangong space laboratory.