A large U.S. spy satellite has lost power and could hit the Earth in late February or early March, government officials said Saturday.
Iran is making "slow but steady" progress in its efforts to enrich uranium, but probably still will not have enough fuel for a single nuclear warhead until 2009 at the earliest, a former U.N. inspector said Tuesday.
The director of a little-known U.S. spy agency that analyzes imagery from the skies says that the increasing availability of commercial satellite photos may require the government to restrict distribution.
A telescope arms race is taking shape around the world. Astronomers are drawing up plans for the biggest, most powerful instruments ever constructed, capable of peering far deeper into the universe — and further back in time — than ever before.
The Bush administration asserted on Wednesday its right to use force against hostile nations or terror groups that use military measures to deny U.S. access to space for peaceful purposes.
[ Full Speech ]
President Vladimir Putin said Wednesday that Russia was concerned about foreign nations planning to deploy weapons in space and developing armaments he called destabilizing.
President Bush has signed an order asserting the United States' right to deny adversaries access to space for hostile purposes. Bush also said the United States would oppose the development of treaties or other restrictions that seek to prohibit or limit U.S. access to or use of space.
In a step toward linking a person's thoughts to machines, Japanese automaker Honda said it has developed a technology that uses brain signals to control a robot's very simple moves.
More than 9,000 pieces of space debris are orbiting the Earth, a hazard that can only be expected to get worse in the next few years. And currently there's no workable and economic way to clean up the mess.
After an embarrassing series of test failures in the ambitious, expensive and highly criticized program to build a national missile-defense shield, the U.S. military is slowing the deployment of interceptors while it conducts more testing.