There are plenty of challenges to putting people on Mars, whether you look at the rocket, the astronaut or the planet itself.
NASA's newest planet-hunting mission has reported detecting its first alien world — a "super-Earth" that is likely evaporating under the heat from its star, a new study finds.
Two tiny explorers are pushing the bounds of their kind, but if scientists have their way, the two adventurers will soon have plenty of company.
A Japanese billionaire and a coterie of artists will visit the moon as early as 2023, becoming the first private citizens ever to fly beyond low-Earth orbit, SpaceX CEO Elon Musk announced tonight.
Just four days before the Cassini spacecraft's dramatic dive into Saturn's atmosphere last year, cameras aboard the spacecraft captured the mission's last image of Saturn's largest moon, Titan.
The water sloshing in Earth's oceans and coursing through its canyons may have been with the planet since it first started taking shape, new research suggests.
This weekend, NASA is planning to launch a spacecraft that will use half a dozen bright-green laser beams to measure seasonal and annual changes to Earth's icy poles.
The planet-enveloping dust storm on Mars has settled enough for NASA to start a 45-day active-listening period in which the agency hopes to make contact with the rover Opportunity after three months of silence, NASA announced yesterday (Sept. 11).
A strange pair of space rocks twirling around each other as they orbit the sun has helped scientists pinpoint when our solar system developed its current formation.
The northern lights just got a boost thanks to a big hole in the sun's atmosphere, and there could be something of a repeat showing tonight.
NASA's new mission to the sun may reveal clues about alien worlds, too.
If you watched the Cassini probe's spectacular dive into Saturn last September, you weren't alone — in fact, space fans worldwide followed its social media campaign, illustrations and animations of the big event, and the "Grand Finale" dive and commentary itself was watched 2 million times, according to NASA.
A giant ring of black holes has been discovered 300 million light-years away, offering new clues about what happens when galaxies collide.
Even on alien worlds covered by water, a new study shows that there's a chance for life to survive for a long time — despite previous research showing that's unlikely.
If you know your way around a chemistry lab, you could help humanity set up shop on Mars — and make some serious cash in the process.
A congressionally mandated report published today (Sept. 5) by the premier science advisory group in the United States has found that NASA should focus its exoplanet research budget on large space- and ground-based telescopes.
The dramatic neutron-star merger that astronomers spotted last year generated a jet of material that seemed to move at four times the speed of light, a new study reports.
The U.S. Geological Survey (USGS) is starting to earnestly evaluate space resources for future mining.
In 1976, NASA's twin Viking landers touched down on Mars in an attempt to answer a weighty question: Is there life on the Red Planet?
Stellar wombs in the constellation Carina bring new life to matter that once belonged to dead stars.