This is SCIENCE FRIDAY. I'm Ira Flatow. Fifty years ago this week, a team of researchers at General Electric created something new: a solid-state device that could emit visible red light without getting hot like a light bulb. Other groups have made light-emitting devices, but this was the first practical one that could make light that a person could see, rather than invisible infrared light.
Curiosity scooped its first sample of Martian soil on Oct. 7, but activities were halted after a small, bright object — which NASA now says is likely a piece of plastic from the rover — was spotted on the ground. Mike Watkins, Curiosity's mission manager, provides an update.
Ben Affleck's Argo is two-two-TWO movies in one, and while neither is especially original, by merging them Affleck pulls off a coup. First, he gives you espionage with the You Are There zing of a documentary. Then he serves up broad showbiz satire. For his final feat, he blends the two into a pulse-pounding nail-biter of a climax. And this all really happened. Most of it. Except for that climax.
"U.S. consumer sentiment unexpectedly rose to its highest in five years in October as consumers became more optimistic about the economy in a possible boost to President Obama's reelection hopes," Reuters reports.