Cheap Astronomy - Dear CA # 087 - Something Different

- Why is the abundance of elements not ranked by atomic number? So, the most abundant element in the Universe is hydrogen, atomic number 1, the second most abundant element is helium, atomic number 2. But are lithium, atomic number 3, and beryllium atomic number 4 the next most abundant? No – not even a little bit. - What’s involved in ‘clearing the tower’? The announcement that (insert mission name here) has cleared the tower mostly derives from NASA mission protocols and some Hollywood embellishment. So, clearing the tower is a procedural matter – it’s not like everyone breathes a sigh of relief because the most dangerous part of the mission is behind them.   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].