Cosmic Dawn: Witnessing the Birth of Galaxies - Yudhijit Bhattacharjee

In the farthest reaching corners of space, time and distance blend into the one that, up until this time, was invisible to our best technology. But now, ALMA, a collection of satellites and antennas in Chile's Atacama Desert are able to peer into the past, witnessing the birth of galaxies and planets that happened billions of years ago. Yudhijit Bhattacharjee, who wrote "Cosmic Dawn" in the April 2014 tells Boyd what scientists have been able to learn about the history of the universe from what we've seen so far.