NASA @NASA
Every day, thousands of tiny pieces of rock fall to Earth from space. Where do they come from? What can they tell us about our planet? Planetary scientist Neyda Abreu has the answers on our latest #GravityAssist podcast episode: https://t.co/07JMHMU6W7 https://t.co/asfnuS2pAK — PolitiTweet.org