Irene, Jude and Denise go on a road trip to find Gabriel, while Franklin and Byron take a journey of their own. Stella and Toni get to know Farnsworth.

Determined to regain control of her life in the aftermath of Noah’s death, Isobel makes a risky choice despite its potential consequences. Meanwhile, Alex and Michael work together to unravel…

Humans once thought the stars were campfires in the sky and the Milky Way “the backbone of night.” In this fascinating segment Dr. Sagan takes us back to ancient Greece,…