Black holes do not exist where space and time do not exist, says new theory
Space-based experiment could test gravity's effects on quantum entanglement
Is dark energy static or dynamic?
Study finds semiclassical gravity counterintuitive, but on the horizon of testability
Why we've got the cosmological constant all wrong
Physicists propose test for loop quantum gravity
Accelerators can search for signs of Planck-scale gravity
Revised theory of gravity doesn't predict a Big Bang
Einstein equations indicate possibility of black hole formation at the LHC
New Law of Physics Could Explain Quantum Mysteries
Time travel theory avoids grandfather paradox
For the first time, astronomers have measured the radius of a black hole
(Phys.org)—The point of no return: In astronomy, it's known as a black hole—a region in space where the pull of gravity is so strong that nothing, not even light, can escape. Black holes that can be billions ...
Quantum steps towards the Big Bang
(Phys.org) —Present-day physics cannot describe what happened in the Big Bang. Quantum theory and the theory of relativity fail in this almost infinitely dense and hot primal state of the universe. Only ...
Looking at quantum gravity in a mirror
Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. At this scale, new phenomena could arise. However, the Planck-scale ...