Jeffrey A. Hoffman
Dec. 07, 2012
Ask an Astronaut: Don Pettit and Jeff Hoffman on Spaceflight
Two astronauts answer your questions and discuss the many curiosities of living in space.
astronaut, space shuttle, don pettit, international space station, rocket, mir, soyuz, weightlessness, zero gravity, life in space
Apr. 22, 2011
Reliving 30 Years of Space Travel
The tumultuous saga of the Shuttle program comes to an end and NASA moves on.
space shuttle, space flight, history, launch, exploration, spaceflight
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Michael Pollan Talks Plants and Food
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Ira Asks: How Do They Make Eyeglasses?
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