No matter how many galaxies astrophysicists can see, when it comes to understanding the early days of the universe they are still in the dark. Emma Chapman is a Royal Society research fellow at the University of Nottingham. She joins host Krys Boyd to discuss the 100 million years missing from the timeline of the universe, and efforts to uncover the secrets of the stars. Her book is “First Light: Switching on Stars at the Dawn of Time.”