Unlocking the Universe Quotes

“the darkness, however, there are quiet changes.”
― Stephen Hawking, Unlocking the Universe

“Dark Matter Dark matter is an idea. The Universe behaves in a way that cannot be explained by the amount of material we can see. A galaxy would have to be about ten times bigger than the galaxy we can see to explain its behaviour. Scientists don’t know what else might be present – they can’t see anything – so they call the missing part dark matter. It could be particles, or very small dim stars, or black holes – some scientists think dark matter could be hot, and some think it could be cold. Discussions – and research – continue.”
― Stephen Hawking, Unlocking the Universe