“We didn’t have birds in the very early universe; we have birds later on. We didn’t have time in the early universe, but we have time later on,” said Stephen Hawking’s colleague, physicist James Hartle, at the University of California, Santa Barbara about what came before the Big Bang.
“Is our universe extremely unnatural, a weird permutation among countless other possibilities, observed for no other reason than that its special conditions allowed life to arise, or, are the properties of the universe are inevitable, predictable, that is, ‘natural,’ locking together into a sensible pattern?” This is the question, the great unknown, that preoccupies theoretical physicist Nima Arkani-Hamed, a professor at the Institute for Advanced Study (IAS) in Princeton, N.J.
“The Hubble tension between the early and late universe may be the most exciting development in cosmology in decades,” says Nobel laureate Adam Riess of the Space Telescope Science Institute (STScI) and Johns Hopkins University. New Hubble Space Telescope data suggests a faster expansion rate in the modern universe than expected based on how the universe appeared more than 13 billion years ago, strengthening the case that new theories may be needed to explain the dark energy forces that have shaped the cosmos.
“From the outside perspective, travel through the wormhole is equivalent to quantum teleportation using entangled black holes,” said Harvard physicist Daniel Jafferis, who has shown that although wormholes can exist, they are not highly recommended for space travel.