The Amazing Expanding, Accelerating Universe
Audio Lectures by: Neta A. Bahcall and Wendy Freedman
In this 1999 conversation from the Science Friday archives, astrophysicists Neta Bahcall and Wendy Freedman explain the then-revelation that the universe’s expansion is accelerating, not decelerating.
Ever woundered how big the largest known star is
This video gives some idea of just how large they are.
