Walkabout the Galaxy
volcanic activity on Venus; supermassive black holes
Astrophysics and Astronomy | Physics
Compelling evidence for recent (1990’s!) volcanic activity on Venus has been un-Earthed, or rather un-Venused, by Robert Herrick through analysis of Magellan radar data. A volcanic vent seems to have roughly doubled in size in 1991. We discuss the difficulties of these observations and the implications for future missions. We also take a look at the role of supermassive black holes in controlling star formation in galaxies and have a numerical Top quark trivia. Warning: this episode gets off to a bit of a silly start, so jump ahead to the 24-minute mark if you want to get straight to Venus!
The next time you find your planet slipping into a global ice age, get volcanoes. Capable of injecting enough carbon dioxide into your planet's atmosphere to raise global temperatures, volcanoes also provide new land for farming and subdivisions. Available in shield and strato configurations, or, if you need a lot of new material on your planetary surface in a hurry, go all out and get a super volcano. Volcanoes cannot be held responsible for property damage, climate change, injuries, or fatalities. Volcanoes, when you care enough to send the very best (Hallmark).
© Joshua Colwell, All Rights Reserved
Length of Episode
Colwell, Joshua; Dove, Adrienne; Cooney, James; and Martin, Audrey, "Active Volcanism on Venus!" (2023). Walkabout the Galaxy Podcast. 234.