Guests: John Batchelor, Dr. David Grinspoon, Dr. David Livingston. Topics: Enceladus and phosphorous, volcanos and upcoming missions regarding Venus.
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John Batchelor and I welcomed back Dr. David Grinspoon for a two-segment discussion regarding phosphorus being discovered on Enceladus plus more on the volcanos on Venus plus the upcoming missions to Venus. In Part One we talked about the megaplume off Enceladus depositing traces of phosphorous in Saturn's E ring. David described how phosphorous was ejected from Enceladus and made it to the E ring which he said was almost sure to exclusively be made up of ejecta from Enceladus. We talked about the essential need for phosphorus to be present for life as we know it and what this may mean for finding phosphorus throughout the solar system. Our Enceladus discussion, while covering only Part One, was comprehensive so don't miss it.
In Part Two of this program, we once again focused on the upcoming DaVinci mission to Venus as our is the PI for the mission, but also on the new information we have about volcanos on the surface of Venus. We talked about the new map of the volcanos plus as a result of a question asked of our guest, we learned that about 80% of the surface of Venus contained volcanos. David pointed out that lava flows or the equivalent maybe covered 50% of the planet. In addition, we talked about O2 levels on Venus as well as the CO2 levels and what that may represent from past history as well as for today.
Please post your comments/questions for this discussion on The Space Show blog for this show.
You can email Mr. Batchelor or Dr. Grinspoon through me at drspace@thespaceshow.com. Dr. Grinspoon can also be reached through his website, https://funkyscience.net.
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