Chicago doctor onboard Atlantis

November 16, 2009 Doctor Robert Satcher is one of six astronauts onboard Atlantis, which launched at about 1:30 p.m. CST.

While the weather is a little cloudy at Cape Canaveral, the countdown was on schedule.

Doctor Satcher is an orthopedic surgeon. He will use his surgical training in joint replacements to help repair two robotic arms on the International Space Station.

The flight will keep the astronauts in orbit through Thanksgiving.

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