Category: Space Exploration

July 7, 2021 / Earth

In another wide-ranging episode, we discuss how atmospheric and oceanic chemistry changes wiped out most life on Earth 250 million years ago, the best evidence yet for a third type of supernova, and the importance…

June 23, 2021 / Cosmology

Just when the mysterious dimming of nearby giant star Betelgeuse is explained, a more distant giant star was almost completely blocked out. We discuss the very different explanations for these two stellar events, and we…

May 12, 2021 / Episodes

How many licks does it take to get to the center of Saturn? We don’t know, but when you get there you will find a gooey surprise. Saturn’s core is more massive than previously thought,…

February 3, 2021 / Episodes

Three missions, including two rovers, are arriving at Mars this month. We preview some of the unique aspects of the Mars Perseverance rover, and we explore the curious case of a giant galaxy with, apparently,…

January 27, 2021 / Black Holes
January 13, 2021 / Episodes

We welcome special guest Heather Archuletta, a NASA pillownaut, who tells us what it’s like to spend weeks simulating space travel in a slightly inverted bed. While time may have seemed to slow down last…