Summary: The first stars and galaxies began forming several hundred million years after the Big Bang. Astronomers are now able to probe back almost that far – to study the light from these distant objects. Among their major tools of exploration are the images and data in large surveys taken using the Hubble Space Telescope. The upcoming James Webb Space Telescope will be able to look back even farther in time to see the births of those first stars and the creation of the earliest galaxies. In this episode, we explore the galaxies in the early universe and find out how astronomers know what they know about these very distant objects. With guest Dr. Rogier Windhorst, Arizona State University.
