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Relentless blitz of small space rocks erased much of Earth’s primordial atmosphere

The inevitable question arises: What replaced the atmosphere? It's possible the same impactors that ejected the atmosphere also introduced new gases.

Another reason to be thankful for turkey

Be thankful for turkeys this Thanksgiving! An antibiotic to target staph infections and strep comes from good bacteria made inside turkeys, say researchers.

Video: Young volcanos on the moon

Scientists have long thought the moon's volcanos stopped erupting a billion years ago. But dotting the lunar landscape are some remarkably fresh volcanic features.

Is this exotic object an ejected black hole or a huge star?

Is SDSS1133 a supermassive black hole ejected from its home galaxy, or the remains of a massive star that exploded as a supernova? Astronomers aren't sure.

More lightning strikes in a warming world?

Rising temperatures could lead to a 50 percent increase in U.S. lightning strikes by the end of the century, says a new study.

Looking for meteors? Try to get away from city lights

City lights drown all but the brightest stars, planets, and fireballs. But there's still some dark out there, as this satellite view of the U.S at night shows.

First gene network operated by brainwaves

Scientists hope a thought-controlled implant might one day help combat neurological diseases, such as chronic headaches, back pain, and epilepsy.

Comet-like tail discovered on long-known asteroid

Until about 10 years ago, it was pretty obvious what a comet was and what a comet wasn't. Now, that's changing ...

What makes Jupiter’s Red Spot red?

A new analysis suggests that sunlight - not chemicals beneath Jupiter’s clouds - give the Great Red Spot its ruddy color.

Dramatic attempt to land on a comet coming Wednesday

Rosetta spacecraft will do the equivalent of transferring an object from one speeding bullet to another, when it tries to place its Philae lander on its comet.

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