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Also this is a very specific plug but his book about black hole astrophysics is almost 1,000 pages & probably all you could hope to know about black holes https://t.co/Rfg1JvnT2U
Also this is a very specific plug but his book about black hole astrophysics is almost 1,000 pages & probably all you could hope to know about black holes https://t.co/Rfg1JvnT2U