Until the publication of Edwin Hubble’s 1936 book, The Realm of the Nebulae, astronomers believed that the Milky Way was the only galaxy in the universe. Hubble infinitely expanded our understanding of the cosmos and showed that what scientists thought was everything, was really just the beginning. In this episode, MIT professor emeritus Marcia Bartusiak unp ... Show More
Nov 19
Carl Benedikt Frey, "How Progress Ends: Technology, Innovation, and the Fate of Nations" (Princeton UP, 2025)
In How Progress Ends: Technology, Innovation, and the Fate of Nations (Princeton University Press, 2025), Carl Benedikt Frey challenges the conventional belief that economic and technological progress is inevitable. For most of human history, stagnation was the norm, and even tod ... Show More
54m 29s
Nov 13
Facing Infinity: Black Holes and Our Place on Earth
Humanity’s relationship with black holes began in 1783 in a small English village, when clergyman John Michell posed a startling question: What if there are objects in space that are so large and heavy that not even light can escape them? Almost 250 years later, in April 2019, sc ... Show More
55m 54s
Nov 13
Craig Hogan, "The Unlikely Primeval Sky" (American Scientist, November-December)
Of all the patterns that could possibly be preserved in the post–Big Bang radiation, the one we see is surprisingly smooth on large angular scales. Sitting by a campfire on a dark night, looking up at the Milky Way, a curious child asks, “What does the sky tell us? Where does it ... Show More
30m 27s
Jun 2025
Cosmic Dawn with Nobel Laureate John Mather
The James Webb Space Telescope is doing something astronomers dreamed about for decades: peering into our universe’s early past, a period known as cosmic dawn. A new NASA documentary—also called Cosmic Dawn—chronicles the inside story of Webb’s design, construction, and launch. J ... Show More
18m 47s