If controllers are unable to repair Russia's Phobos-Grunt probe, which was intended to fly to a moon of Mars but is instead stranded in Earth's orbit, it will eventually crash back to Earth. The probe contains toxic flues as well as a small amount of radioactive material.
The Western black rhino is now extinct, and a quarter of other mammal species are at risk of extinction, according to an assessment of more than 60,000 plant and animal species by the International Union for Conservation of Nature.
Why did the moon once have a magnetic field? A new proposal might hold the answer to a mystery that has baffled scientists for decades.
Asteroid 2005 YU55, a giant rock floating through space, looks like a giant rock floating through space, reports one astronomer, who observed the giant rock as it floated through space past the Earth on Tuesday.
Launched Tuesday, Russia's Phobos-Grunt spacecraft was meant to explore the Martian moon Phobos. But, in what could mark the fourth Mars probe failure in a row, Phobos-Grunt now threatens to become another piece of space junk uselessly orbiting Earth.
Bering Sea Storm: The National Weather Service warns that the storm of 'epic magnitude' that is making its way toward northwestern Alaska could be the biggest the state has seen in 40 years.
The size of a city block, Asteroid 2005 YU55 buzzed past Earth with just 201,700 miles of room to spare.
In what is will be the nearest flyby by a big space rock since 1976, the city-block sized Asteroid 2005 YU55 will buzz past our planet with a mere 201,700 miles of clearance at 6:28 pm Eastern Time on Tuesday.
The closest approach of 2005 YU55 will be at 6:28 p.m., Eastern time, on Tuesday. The asteroid will be roughly 203,000 miles from Earth, just inside the moon's orbital distance.
Using the Hubble Space Telescope, astronomers have captured light from the disk of dust and gas surrounding a supermassive black hole at the heart of a quasar.
Asteroid 2005 YU55 is as big as an aircraft carrier and the biggest space rock to come this close to Earth in 25 years. Scientists say asteroid 2005 YU55 will fly by Tuesday evening.
NASA researchers caught on film an 18-mile-long crack in the Pine Island Glacier in Antarctica. It looks like a huge new iceberg is forming.
520-day mission to Mars: The all-male crew of three Russians, a Frenchman, an Italian-Colombian and a Chinese slowly emerged from the western Moscow facility, which simulated the confinement, stress and fatigue of interplanetary travel — minus the weightlessness.
The best chance for finding life on Mars may be underground, judging by layers of clay that likely were formed in a warm, moist environment 3 to 4 billion years ago, a team of astronomers says.
Saber-toothed squirrel: With its superlong fangs, long snout and large eyes, the mouse-size animal bears an oddly striking resemblance to the fictional saber-toothed squirrels depicted in the computer-animated 'Ice Age' films, scientists added.
Two unmanned spacecraft successfully docked in what many Chinese call their space program's first 'space kiss' Thursday morning. Analysts suggest the step might bode well for international collaboration.
Supermassive black hole clouds are made of debris from asteroid-planet collisions, a new study has found.
The China space program is set to dock two orbiting spacecraft Wednesday afternoon, moving it one step closer to orbiting a space station early next decade.
South Florida python: A 16-foot Burmese python was spotted in a tree island in Florida's Everglades and shot dead. An autopsy revealed that it had devoured a 76-pound deer.
Global warming is playing a significant role in diverting much-needed wet winter weather away from the increasingly dry Mediterranean, a new study led by a NOAA scientist suggests.