Relativity Videos

To find out more visit: http://www.nasa.gov/mission_pages/GLAST/news/first_year.html Want more? Subscribe to NASA on iTunes! http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=283424434 Or get tweeted by NASA: http://twitter.com/NASAGoddard In its first year of operations, NASA s Fermi Gamma-ray Space Telescope has mapped the entire sky with unprecedented resolution and sensitivity in gamma-rays, the highest-energy form of light. On May 10, 2009 a pair of gamma-ray photons reached Fermi only 900 milliseconds apart after traveling for 7 billion years. Fermi s measurement gives us rare experimental evidence that space-time is smooth as Einstein predicted, and has shut the door on several approaches to gravity where space-time is foamy enough to interfere strongly with light.

Physicist Frank Wilczek of MIT offers his take on Einstein's famous equation. This podcast was produced by David Levin and Lexi Krock. Audio editing by David Levin. Music courtesy www.animalhospitalmusic.com. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. For more on E = mc2, visit www.pbs.org/nova/einstein

Astrophysicist Neil deGrasse Tyson from the American Museum of Natural History offers his take on Einstein's famous equation. This podcast was produced by David Levin and Lexi Krock. Audio editing by David Levin. Music courtesy www.animalhospitalmusic.com. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. For more on E = mc2, visit www.pbs.org/nova/einstein

Physicist Janet Conrad of Columbia University offers her take on Einstein's famous equation. This podcast was produced by David Levin and Lexi Krock. Audio editing by David Levin. Music courtesy www.animalhospitalmusic.com. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. For more on E = mc2, visit www.pbs.org/nova/einstein

Physicist Sheldon Glashow of Boston University offers his take on Einstein's famous equation. This podcast was produced by David Levin and Lexi Krock. Audio editing by David Levin. Music courtesy www.animalhospitalmusic.com. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. For more on E = mc2, visit www.pbs.org/nova/einstein

Physicist Alan Guth of MIT offers his take on Einstein's famous equation. This podcast was produced by David Levin and Lexi Krock. Audio editing by David Levin. Music courtesy www.animalhospitalmusic.com. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. For more on E = mc2, visit www.pbs.org/nova/einstein

Physicist Brian Greene of Columbia University offers his take on Einstein's famous equation. This podcast was produced by David Levin and Lexi Krock. Audio editing by David Levin. Music courtesy www.animalhospitalmusic.com. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. For more on E = mc2, visit www.pbs.org/nova/einstein