Meet the brilliant minds throughout history, from Galileo to Edwin Hubble, responsible for creating the telescope. Today, their invention allows humanity to reach the furthest limits of seeing – 13 billion light-years out.

Originally released by PBS, 2019. Streaming video file encoded with permission for digital streaming by Infobase on June 18, 2019.

Modern Space Science (1:59); --Ancient Megaliths (5:10); -- Book of Optics (4:05); -- Glass Manufacturing (4:38); -- Spyglass (3:06); -- Astronomical Applications (6:42); -- Data Collection and Storage (8:01); -- Cosmic Heartbeats (5:06); -- Hooker Reflector (7:10); -- Universe Expansion (6:04); -- Credits: The Telescope (0:29); .