Score one more for Einstein. A new study has confirmed his theory of general relativity works on extremely large scales. Physics - General relativity - Relativity - Einstein - History

A Chinese proverb says women hold up half the sky. In the future, they'll be doing it from space. Chinese space program - Space - Technology - Astronaut - Missions

American physicist Sally Ride achieved lasting fame in June 1983 when she became the first American woman to travel in space as a crew member of the Space Shuttle Challenger. Space Shuttle Challenger - Space - Technology - Space Shuttle - Sally Ride

The maiden flight of the X-51 Waverider aircraft — the first U.S. hypersonic vehicle to fly in six years — is scheduled to take place later in March. Air force - Military - Boeing X-51 - Hypersonic - United States

After a decade of mystery, astronomers have now shown that a pair of white dwarf stars spin around each other in just 5.4 minutes, making them the fastest-orbiting and tightest binary star system ever found, the researchers claim. Star - Binary star - White dwarf - Astronomy - Supernova