If you're in North America, chances are you'll be able to watch Thursday's partial solar eclipse, provided you have cooperative weather and the appropriate viewing equipment.
In what scientists are calling a 'once-in-a-lifetime' event, Comet Siding Spring buzzed past Mars, under the watch of seven spacecraft operating on or around the Red Planet.
The atmospheric conditions that led to the so-called Dirty Thirties eight decades ago are present today, say researchers.
Harvard zoologist Piotr Naskrecki was taking a nighttime walk in a rainforest in Guyana when he happened upon a rare Goliath birdeater spider.
Comet Siding Spring is set to whiz past Mars on Sunday, an event that scientists say happens once in a million years.
NASA's Interface Region Imaging Spectrograph probe offers never-before-seen views of our nearest star.
After nearly two years orbiting Earth, the U.S. Air Force's X-37B space plane landed in California. What was the mysterious spacecraft doing in while in orbit?
Buried for more than nine decades under the sand dunes of Guadalupe, Calif., the giant plaster sphinx from "The Ten Commandments" has been rediscovered.
Severe blizzards and avalanches in northern Nepal, which caused the deaths of at least 20 people this week, remind trekkers of the dangers of traveling across snowslide-prone areas.
Saturn's moon Mimas could hold an ocean of liquid water beneath its surface. It also looks remarkably like the Death Star.
A marine scientist is deploying an undersea glider to take measurements during the Category 3 storm, which is expected to hit Bermuda. Hopefully, the rare underwater perspective will yield insights that can be used to develop forecasting models.
Patterns of bite marks on bones chomped on by tyrannosaurids are consistent with play behavior exhibited by modern animals, says one paleontologist.
Scientists have pinned down the identities of two closely-related viruses that are wiping out entire communities of toads and newts in Spain. Now they have to figure out how to slow them down.
While the average number of twisters has held steady for more than 50 years, the US tornado season appears to have taken on a 'boom or bust' pattern of extremes.
Washington wildlife officials say they've had to trap seven bears that became a dangerous nuisance in her neighborhood.
A mountain-sized comet will pass mind-bogglingly close to Mars on Sunday, approaching within 87,000 miles at a speed of 126,000 mph.
Scientists say the wobble in Saturn's smallest moon could point to an inner sea sloshing within.
NASA's New Horizons space probe is set to zoom by Pluto next summer. Where should it go after that?
Images of water ice snapped by a Mercury-orbiting NASA probe suggests that ice lurking in the otherwise-scorching planet's frigid craters may have arrived there recently.
The enormous ancestors of modern kangaroos may have preferred walking to hopping, new research indicates.
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