NASA @NASA
A black hole is an extremely dense object from which no light can escape. But how do black holes begin? Are they made from “seeds” of smaller black holes, growing in size as they consume gas & dust? This #BlackFriday, dive into #BlackHoleFriday ⚫: https://t.co/XLiYb1nRUK https://t.co/EmRNpMeO9Z — PolitiTweet.org