The 365 Days of Astronomy

Travelers in the Night Eps. 487 & 488: Touching The Sun & 20 Years

04.14.2019 - By 365DaysOfAstronomy.orgPlay

Download our free app to listen on your phone

Download on the App StoreGet it on Google Play

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: - The Parker Solar Probe and it's instruments, are protected by a 4.5 inch thick high tech carbon-composite heat shield because at closest approach to the Sun it is exposed to about 500 times the solar radiation we receive here on Earth. - The Catalina Sky Survey and the rest asteroid hunters of the world have brought the total known Earth approaching objects list to 18,000, a number which grows by about 40 new ones each week.   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://astrogear.spreadshirt.com/ 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 Astrosphere New Media. http://www.astrosphere.org/ Visit us on the web at 365DaysOfAstronomy.org or email us at [email protected].

More episodes from The 365 Days of Astronomy