Stephen Hawking is an English theoretical physicist, cosmologist and author. His book, “A Brief History of Time: From the Big Bang to Black Holes” is popular among general readers and appeared on the British Sunday Times best-seller list for a record-breaking 237 weeks. Hawking was the first to set forth a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics.
Dark matter is a hypothetical kind of matter that cannot be seen with telescopes but accounts for most of the matter in the universe. I changed it to “black matter” for meme purposes.