Which came first, the galaxies or the stars? New space telescope may answer cosmic riddles.

Many in the science community and fans of space and science in general are awaiting the launch of the James Webb Space Telescope, scheduled for Christmas Day. NASA and other space agencies have been working on this mission for more than two decades. So, what can we expect from Webb? Marketplace’s Kimberly Adams speaks with Adam Riess, a professor of astronomy and physics at Johns Hopkins University and a winner of the 2011 Nobel Prize in physics.