12/07/2012

Ask an Astronaut: Don Pettit and Jeff Hoffman on Spaceflight

Backdropped against clouds 130 nautical miles below, astronaut Mark C. Lee floats freely without tethers as he tests the new Simplified Aid for EVA Rescue (SAFER) system. Image courtesy of NASA
Backdropped against clouds 130 nautical miles below, astronaut Mark C. Lee floats freely without tethers as he tests the new Simplified Aid for EVA Rescue (SAFER) system. Image courtesy of NASA

For the latest in our “Ask an Expert” series, current NASA astronaut Donald Pettit and former astronaut Jeffrey Hoffman chat about their spaceflight experiences. From brushing your teeth to weightless dreams, the astronauts discuss the many curiosities of living in space.

Segment Guests

Don Pettit

Don Pettit is a NASA astronaut at NASA’s Johnson Space Center in Houston, Texas.

Jeffrey A. Hoffman

Jeffrey A. Hoffman is a former NASA astronaut and an aerospace engineering professor in the department of aeronautics and astronautics at the Massachusetts Institute of Technology in Cambridge, Massachusetts.

Meet the Producer

About Denise Chow

Denise Chow is a sci-tech editor at Live Science and a former associate producer for Science Friday.