UNAWE Space Scoop - Galaxies Spin Faster As They Get Older

http://www.unawe.org/kids/unawe1709/ Dark matter doesn’t shine like stars or reflect light like planets, or even absorb light like cosmic dust. We can only detect dark matter through its gravitational effect on other objects, such as spiral galaxies. Like the wind on a fall day, you can’t see it but you can sure see how it makes the leaves blow around. 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!