39:12
True Size of the Universe, Inescapable Planets, Magnetic Poles Reversal | Q&A 226
38:56
How Dark Does Space Get, Mining Psyche, Danger from Rogue Planets | Q&A 235
39:54
Auroras in the South, Restarting Planets' Dynamos, Old People on Mars | Q&A 222
41:22
Stuck in a Space Station, Black Holes' Habitable Zones, Human-Rated Starship | Q&A 210
26:35