Something Stupid. Episode 4a: Space mining Most of the contents of the periodic table are available in atomic or molecular form across the solar system. After all, the Earth accreted out of the same circumsolar dust cloud that all the other planets accreted out of, not to mention the dwarf planets, asteroids, comets and other bits.   Episode 4b: Time machine (or not) In a previous episode of Implausible Engineering we discussed how you could shift yourself into the future by sitting within a very, very fast moving cabin where relativistic time dilation would come into play.   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].

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