Dr. William Stefanov, manager of the Exploration Science Office at NASA’s Johnson Space Center, shares his expertise in observing the third rock from the sun on this Earth Day 50th anniversary episode. HWHAP Episode 141.
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From Earth orbit to the Moon and Mars, explore the world of human spaceflight with NASA each week on the official podcast of the Johnson Space Center in Houston, Texas. Listen to in-depth conversations with the astronauts, scientists and engineers who make it possible.
