The US Air Force's secret X-37B space plane remains in Earth orbit, but its initial mission might be coming to an end.
The Space Shuttle Atlantis streaks skyward as sunlight pierces through the gap between the orbiter and ET assembly. Atlantis lifted off on the 42nd space shuttle flight on August 2, 1991 carrying a crew of five and TDRS-E.
A US Air Force Stealth fighter F-22 Raptor takes off from Kadena Air Base on the southern Japanese island of Okinawa, Aug. 14, 2012. A group of F-22s arrived in Okinawa in late July, their first deployment overseas after the easing of flight restrictions imposed in mid-May because pilots reported dizziness and other symptoms of hypoxia.
News video showed a spectacular contrail Monday off California's coast, and debate over the 'mystery missile' blasted off. But even as government agencies said 'it wasn't us,' the US denied any threat.
One of five members of the Air Force Academy Wings of Blue parachute team jumps into the Rocket Garden at the Kennedy Space Center Visitor Complex which is celebrating Air Force Week. The Air Force Week program offers men and women of the United States Air Force the unique opportunity to share their experiences with members of the local community.
As firms prepare to launch the space tourism business, one study warns that the soot from the suborbital crafts' hybrid rocket motors could collect in the stratosphere and warm the poles.
Setting off speculation that China is manipulating exports to punish certain trade partners, Beijing announced in July it was slashing its six-month export quota of so-called 'rare earths' by 72 percent. Speculation continued this week with reports of an expanding embargo of the minerals. But the so-called "rare earths" are neither rare nor does China have a lock on them. Although China produces 97 percent of the world's rare earths, it contains only 30 percent of the world's supply. The United States, Russia, and Australia all have significant reserves of the 17 elements essential in semiconducters, lasers, and other high-tech gadgets. While mining them has proved uneconomical at usual world prices and environmentally harmful, that may be changing. Click through the following slides to read how rare earths are important to your daily life.
In two cases, federal judges have ruled against the 'don't ask, don't tell' law banning openly gay men and women from serving in the US military. Most Americans favor repeal of the law, but it's a tough fight in Congress.
On same-sex marriage and "don't ask, don't tell," Republicans and other conservatives increasingly are at odds with public opinion. Will the tea party movement help gay rights?
Two Chinese satellites bumped into each other very gently, leaving analysts wondering what China is up to.