A covert companion siphoned material from its stellar neighbor before it exploded in a fiery death, a new study suggests.
A rock that had been used as a barn doorstop on a Michigan farm for the last 30 years is actually a massive meteorite worth over $100,000.
Deep-space missions, to Mars and beyond, could spell trouble for astronauts, according to new research showing that cosmic radiation can damage the digestive tract, stomach and colon.
World Space Week starts today (Oct. 4), kicking off a weeklong celebration of space activities around the globe — and even out at sea.
NASA's Hubble Space Telescope photographed a stunning galaxy cluster whose gravity acts as a natural lens, bending and blurring the view of galaxies that lie behind it.
A new robot kit lets kids build their own rovers to learn more about technology and the spacecraft used to explore other cosmic bodies, like the moon and Mars.
The seventh annual Space & Science Festival at the Intrepid Sea, Air & Space Museum kicks off this week, and Space.com will be there to make Alka-Seltzer rockets.
A remarkable new image from the Hubble Space Telescope captures a close-up view of some of the most distant galaxies in the universe.
A giant ring of black holes has been discovered 300 million light-years away, offering new clues about what happens when galaxies collide.
New footage from the International Space Station captured Tropical Storm Gordon as it grew stronger over the northern Gulf of Mexico.
Meteorites may hold new clues about the supernova explosions from which the stars and planets of our solar system formed, new research shows.
The Opportunity rover on Mars is battling to survive during an epic dust storm, and while NASA waits for any signs of life from the rover, you can beam the robot your support with a digital postcard.
An innovative laser experiment from the CERN lab in Switzerland has brought physicists one step closer to understanding mysterious antimatter.
An astronaut on the International Space Station sent a good-luck message to FIRST Lego League teams around the world as they take on the challenges of space exploration.
Astronomers have measured the mass of a very young alien planet for the first time, using the European Space Agency's Gaia and Hipparcos star-mapping spacecraft.
Signals from a rapidly rotating, ultradense star have been transformed into beautiful melodies, revealing the "SOS" sounds of the star's dwindling companion.
Scientists using NASA's Chandra X-Ray Observatory have found evidence that hundreds of possible midsize black holes lurk at the core of smaller galaxies in the universe.
An incredible time-lapse video from the European Southern Observatory's Very Large Telescope (VLT) captures a daring star as it whips around the monster black hole at the center of the Milky Way.
Get ready to see the Red Planet up close this week: Just after Mars reaches opposition with the sun July 27, 2018, observers on Earth will have their closest view of the planet since 2003.
A distant galaxy boasts a gaseous halo that may shed light on how some of the first galaxies in the universe evolved, new research shows.
A new type of aurora has been spotted on Mars, and thieving streams of solar wind may be to blame, a new study shows.
Viking Orion, the newest Viking Ocean Cruise ship, made its debut in Italy on June 14, revealing a unique high-tech feature: a planetarium at sea.
Throughout history, humans have shared an innate interest in exploration — to travel to new reaches of our planet, and even our universe.