This morning, astronauts Michael Hopkins and Richard Mastracchio stepped outside the International Space Station. Their mission: to conduct one of three urgent spacewalks to repair a coolant system. Mission Control seemed happy with today's effort.
(SOUNDBITE OF MISSION CONTROL RECORDING)
UNIDENTIFIED MAN #1: OK. Really nice work, guys. We're about an hour and a half ahead. Let's take some steps beforehand. First, we want to do an ammonia inspection.
There are lots of lists as the year draws to a close: best films, best books, Persons of the Year. This year, NPR is looking at the numbers that tell this year's story. So, our math guy, Keith Devlin, has a nomination for number of the year. He joins us now from Stanford University, where he's a professor of something that's too long for me to state. Keith, thanks very much for being with us.
KEITH DEVLIN: Hi, Scott. Good to be with you again.
SIMON: All right. Drum roll, please: the number of the year is...
NASA astronaut Chris Cassidy performs a spacewalk in May to inspect and replace a pump controller box on the International Space Station. On Saturday, two astronauts will perform the first in a series of similar spacewalks to fix a broken cooling line on the ISS.
NASA astronauts will be heading out to conduct critical repairs on the International Space Station early Saturday morning. The 6 1/2-hour spacewalk, the first in a series, will replace a faulty piece of cooling equipment.
Under throbbing loudspeakers at a NASCAR track south of Miami, vaguely humanoid robots with two legs, four legs and tank treads take up garages that normally house race cars.
The robots, along with researchers from the Massachusetts Institute of Technology, Lockheed Martin, NASA and 13 other teams from around the world, are in Homestead, Fla., for the robot Olympics on Friday and Saturday.