More than 8,000 contractor jobs in the U.S. manned space program could be cut after the space shuttle program is shut down in 2010, the U.S. space agency said.
Changes in climate may have first shrunk the woolly mammoth's habitat, but humans delivered the final blow to the species, a new study shows.
The newfound black hole is only 3.8 times as massive as the sun and just 15 miles (25 kilometers) in diameter.
