May 21, 2010 8:44 AM by Bea Karnes, News First 5
The Atlantis astronauts are making one last spacewalk before leaving the International Space Station.
Two of the shuttle crew ventured out Friday morning to finish installing fresh station batteries. It's the third spacewalk this week for the visiting astronauts.
Spacewalkers Garrett Reisman and Michael Good will plug in the last two batteries. Four new batteries went in during Wednesday's excursion.
Atlantis delivered the batteries along with a new Russian compartment. The chamber was opened Thursday, but had to be sealed again when metal filings were found floating inside. Mission Control says air scrubbers hopefully will clean up everything.
Atlantis will undock from the space station Sunday for the last time.