NASA's Mars Curiosity rover has officially spent three years moving across the Red Planet. Now, researchers are celebrating this fact by looking back on all of the amazing discoveries the robot has made during that time.
The mystery behind Saturn's rings has finally been solved. Scientists have found that planetary rings, such as the ones orbiting Saturn, have a universally similar particle distribution.
Astronomers have spotted the ghostly remnants of galaxy interactions in a nearby galaxy group.
A NASA robot may be set to build rocket parts for a Mars mission.
Star Wars and Star Trek fans are usually at odds, but on Pluto's moon, Charon, the two really collide. The craters on the tiny moon have been unofficially named after characters from the beloved sci-fi franchises.
For the first time ever, physicists have directly observed how a galaxy is formed.
Scientists have discovered what might be the largest feature in the known universe. They've discovered a ring of galaxies that's 5 billion light-years across.
Want to see a meteor shower? Then next week may be your chance. The Perseid meteor shower will be in full swing, and you may be able to start seeing the shooting stars as early as this weekend.
On July 25, scientists discovered a mile-long asteroid that raced past Earth at about 45,000 miles per hour and a safe distance of 5.4 million miles away.
Scientists have discovered a hidden planetary system that was shrouded in the arms of Cassiopeia, just 21 light-years away from Earth.
NASA's Hubble Space Telescope has captured a breathtaking new image of the center of the Lagoon Nebula, a region that's known for its storm of activity.