NASA scientists say that the Mars Curiosity rover's audacious August 5 landing plan, which involves a hypersonic parachute, retrorockets, and a hovering 'sky crane' system is exactly what is needed for the $2.5 billion rover.
Amelia Earhart, whose 115th birthday is celebrated on Google's home page Tuesday, disappeared with her navigator over the Pacific Ocean in 1937. A new search for her remains has returned nothing definitive.
Sally Ride was very private, but she inspired a generation of female scientists with her historic shuttle flight in 1983. Sally Ride, a physicist, proved that women could be equal partners with men in space.