Travelers in the Night - Eps. 275 & 276 - No Place Like Home & Big 3

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. Today's 2 topics: - Earth is so far unique in the cosmos. The human use of fossil fuels is changing the climate which will make our lives difficult in ways we are just learning to appreciate. - Carson Fuls of the Catalina Sky Survey discovered 3 PHAs, Potentially Hazardous Asteroids, during one momentous 6 night observing run. Enter the code for this week into this site: https://cosmoquest.org/achievements/code for a chance to win. This week's code is HkdJvo 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 info@365DaysOfAstronomy.org. While you're at it, do support our Learning Space educator training program by going to this site: https://www.patreon.com/LearningSpace Please help us keep training the trainers! Learning Space is a weekly G+ Hangout on Air about topics in astronomy education, outreach and other ways to share science both in the school setting and outside it. We bring you interviews, hands-on demonstrations, lists of our favorite educational resources and more!