
NASA @NASA
What is a black hole? How do we study them when we can’t see them? Astrophysicist Jeremy Schnittman of @NASAGoddard joins our Chief Scientist Jim Green for a conversation about the latest black hole research on the new #GravityAssist podcast: https://t.co/oI2VhpQRVm https://t.co/mP1JXNlUGI — PolitiTweet.org