CAPE CANAVERAL, Florida - Two U.S. astronauts floated outside the International Space Station on Wednesday to replace a failed computer that serves as a backup to critical control systems, including the outpost's solar panel wings.
BOWDOINHAM, Maine - The number of baby lobsters in the Gulf of Maine has dropped by half since 2007, a phenomenon that has puzzled scientists as the population of adult lobsters remains near a record high, contributing to robust catches.
CAPE CANAVERAL, Florida - The chance of a city-killing asteroid striking Earth is higher than scientists previously believed, a non-profit group building an asteroid-hunting telescope said on Tuesday.
LONDON - Sun seekers who leave northern Europe for warmer climes are marginally less happy than those left behind, a study found.
WASHINGTON - The first of six U.S. test sites chosen to perform unmanned aircraft systems (UAS) research will start flight operations during the week of May 5, the U.S. Federal Aviation Administration said on Monday.
MOSCOW - Russians with smartphones and dashboard cameras captured footage of a meteor that flashed across the night sky near the Arctic Circle over the weekend.
CAPE CANAVERAL, Florida - A cargo ship owned by Space Exploration Technologies arrived at the International Space Station on Sunday, with a delivery of supplies and science experiments for the crew and a pair of legs for the experimental humanoid robot aboard that one day may be used in a spacewalk.
CAPE CANAVERAL, Florida - A robotic U.S. spacecraft ended a pioneering mission to map dust and gases around the moon with a planned, kamikaze crash into the lunar surface early on Friday, NASA officials said.
WASHINGTON - This may be the role reversal to end all role reversals.
NEW YORK - Scientists have moved a step closer to the goal of creating stem cells perfectly matched to a patient's DNA in order to treat diseases, they announced on Thursday, creating patient-specific cell lines out of the skin cells of two adult men.
WASHINGTON - The U.S. Food and Drug Administration proposed rules on Thursday that would ban the sale of e-cigarettes to anyone under 18, but would not restrict flavored products, online sales or advertising, which public health advocates say attract children.