NASA hopes to cut back airline fuel emissions with a bug-repellant coating

Bugs splattered across the surface of a commercial jet might seem pretty insignificant, but NASA researchers say they can decrease fuel efficiency by as much as six percent. When those dead bugs collect on aerodynamically-sensitive elements like the leading edge of wings, they disturb the airflow over the surface. That causes turbulent air and drag […]

Astronomers Watch a Supernova and See Reruns –

In the 1993 Bill Murray movie, a weatherman finds himself reliving the same day over and over again. Now astronomers using the Hubble Space Telescope say they have been watching the same star blow itself to smithereens in a supernova explosion over and over again, thanks to a trick of Einsteinian optics. The star exploded […]