Climate change emissions are cooling the upper atmosphere, decreasing atmospheric density and causing space junk to remain in orbit longer.
The VORTEX-2 tornado research project completed last week aims to increase warning times and reduce false alarms.
WATERMELON FEAST: Kids participate in a watermelon eating contest at Tolmachoff Farms' Family Farm Day in Glendale, Ariz., in this June 2006 photo.
Amateur astronomers gathered last Saturday in New York City's Battery Park for an evening of stargazing as part of the 2010 World Science Festival.
For years scientists had a hard time figuring out which asteroids the meteorites came from.
Halley's Comet and other named comets may have formed around other stars in the galaxy, but were snatched into orbit around the sun back when it was packed with hundreds of other stars.
The collisions that occurred on Jupiter last week remain a mystery to scientists who are currently examining this latest impact on the gas giant.
Solar storms on their way. Natl Academy of Sciences: "Major solar storm could cause twenty times more economic damage than Hurricane Katrina..."
By comparing a scar on Jupiter with that left by the 1994 Comet Shoemaker-Levy 9 impact, astronomers believe that 1,600ft wide asteroid slammed into the planet, with the force of a few thousand nuclear bombs.
Members of the graduating class of 2010 at the P.A.C.E. Head Start program look to the crowd during a graduation ceremony at Reed Green Coliseum on the campus of the University of Southern Mississippi on May 25. Close to 400 graduated from the program that gives children a head start to early education.