How many astronauts have there been? There may have been more than you think! Also, hear a brief interview with my student, Olivia, who helped design a zero gravity indicator for Space X. Read an article about Olivia designing Asteroid here: (http://www.collectspace.com/news/news-091024a-polaris-dawn-asteroid-shiba-dog-zero-g-indicator.html) To purchase Asteroid, click here: https://shop.spacex.com/products/polaris-dawn-zero-gravity-indicator. Visit www.moosejawmatt.com and https://www.patreon.com/natureandscience4kids.Find Moosejaw Matt on Facebook, Instagram, and Youtube.Music and picture from pixabay.com. Sound effects from freesound.org.Thanks to RomanSenykMusic and REDproductions for our theme songs.