15 min listen
Travelers in the Night Eps. 219E & 220E: Hot Hand & Dangerous Aten
Travelers in the Night Eps. 219E & 220E: Hot Hand & Dangerous Aten
ratings:
Length:
6 minutes
Released:
Dec 3, 2023
Format:
Podcast episode
Description
Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org Today's 2 topics: - Every year asteroid hunters discover about a hundred objects which are larger than 450 feet in diameter and come closer than 20 times the Moon's distance from us. We call these potentially hazardous asteroids. In 2015 my group the Catalina Sky Survey discovered 21 of them. It was thus exciting news to our team, when, recently, our newest team member Greg Leonard discovered three of them in rapid succession. - Aten asteroids pose a threat as well as an economic opportunity for humans. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations. Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.
Released:
Dec 3, 2023
Format:
Podcast episode
Titles in the series (100)
Cheap Astronomy - Dear CA #97: Only So Much: You can’t have everything. – How big is the Universe? Needless to say we just don’t know, beyond saying it’s at least as big as the observable Universe and very likely bigger. The real answer to the question may just be unknowable, since we... by The 365 Days of Astronomy