NASA @NASA
Why does the Earth have a Moon 🌕 ? How was the Moon formed? On the latest episode of our #GravityAssist podcast, Chief Scientist Jim Green and Robin Canup of @SwRI discuss some of the oldest questions in planetary science. 🎧 Listen and subscribe: https://t.co/j0DwuEkiX1 https://t.co/t8EFhE4hy1 — PolitiTweet.org