Science Friday Initiative
Science Friday: Studying Rocks Found on Earth for Clues About Space
We'll take a tour of the Center for Meteorite Studies, and learn how meteorites can teach us about the history of the solar system.
Science Friday Initiative
Science Friday: An Astronaut Explores Nasa's Scientific Frontiers
Learn how astronaut and astrophysicist John Grunsfeld leads NASA's investigations of Earth and beyond. This astronaut flown the space shuttle five times, and performed eight spacewalks to service the Hubble telescope. [23:32]