Wednesday, November 5, 2008

Patricia Burchat TED Talk - The Search for Dark Matter and Dark Energy

Excellent exposition of the subject. Clearest explanation of gravitational lensing of distant galaxies by dark matter halos around nearby galaxies - forming the 'Einstein ring' image on receptor [Einstein first predicted bending of light in strong gravitational fields] - ever! Also, very ably sets out conceptual distinction between Dark Energy and Dark Matter, contextualizes dark matter candidate searches within mainstream particle physics experiments, such as those at the Large Hadrom Collider on the one hand, and astrophysical searches on the other, such as that at the Fermi Large Area Telescope.