Cheap Astronomy - Dear CA Ep. 99: Same Old

Making the new old again… Dear Cheap Astronomy – I still don’t get Lagrange points, particularly L4 and L5. Most explanations of Lagrange points are a bit idealised. For example, explanatory diagrams show Earth’s orbit as a perfect circle around the Sun, which isn’t right, it’s really an ellipse.   Dear Cheap Astronomy – Can neutrinos predict supernova explosions? We’ve previously expressed doubts that the recent dimming of Betelguese suggests it is about to go supernova. Since Betelguese is an irregularly variable star, the recent dimming just means it’s being true to form.   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 [email protected].