Cheap Astronomy - Dear CA #76: Cosmology Conundrums

We think, therefore we are confused. What exactly is vacuum energy? To paraphrase various physicists and science communicators over the last few decades – anyone who thinks that a vacuum is nothing, just doesn’t get it. So what do you make of Massive Gravity? As we’ve previously discussed on Cheap Astronomy, there are a lot of people out there who want to muck about with General Relativity. After all, it is fantastic physics and a genuine theory that has been tested time and again and it keeps on passing those tests.   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]. --Downloaded