Physics has entered a remarkable era. Ideas that were once the realm of science fiction are now entering our theoretical ย and maybe even experimental ย grasp. Brand-new theoretical discoveries about extra dimensions have irreversibly changed how particle physicists, astrophysicists, and cosmologists now think about the world. The sheer number and pace of discoveries tells us that we've most likely only scratched the surface of the wondrous possibilities that lie in store. Ideas have taken on a life of their own.
Lisa RandallYou might find it hard to imagine gravity as a weak force, but consider that a small magnet can hold up a paper clip, even though the entire earth is pulling down on it.
Lisa RandallWe certainly don't yet know all the answers. But the universe is about to be pried open.
Lisa RandallThere are many aspects of time we just do not understand. Thatโs the thing about writing a popular book: You realize the things you understand because for those you can give a really simple explanation. But some things about time I just donโt know how to give simple explanations for, even though I can tell you mathematically whatโs going on.
Lisa Randall