An asteroid half the size of a football field will give Earth the ultimate close shave this month, passing closer than many satellites when it whizzes by, but it won't hit the planet, NASA scientists say.
U.S. President Barack Obama welcomed nearly two dozen researchers and innovators at the White House Friday (Feb. 1) to receive the National Medal of Science and National Medal of Technology and Innovation.
The day the shuttle Columbia was lost, along with the seven astronauts inside it, Jerry Ross was standing at the end of the runway, waiting for the spacecraft to touch down.
WASHINGTON (Reuters) – A pair of big, blimp-like craft, moored to the ground and flying as high as 10,000 feet, are to be added to a high-tech shield designed to protect the Washington D.C. area from air attack, at least for a while. The bulbous, helium-filled "aerostats" – each more than three quarters the length of a football field at 243 feet – are to be stitched into existing defenses as part of an exercise of new technology ordered by the Defense Department. …