Is dark energy static or dynamic?
Physicists experimentally demonstrate one-way quantum steering
Physicists propose test for loop quantum gravity
Pulsars with black holes could hold the 'holy grail' of gravity
The intermittent light emitted by pulsars, the most precise timekeepers in the universe, allows scientists to verify Einstein's theory of relativity, especially when these objects are paired up with another ...
Could the combination of general relativity and quantum mechanics lead to spintronics?
Physicist suggests speed of light might be slower than thought
Einstein's gravity theory passes toughest test yet: Bizarre binary star system pushes study of relativity to new limits
(Phys.org) —A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the nature of gravity. The extremely strong gravity of a massive ...
Revised theory of gravity doesn't predict a Big Bang
New Law of Physics Could Explain Quantum Mysteries
How to test the twin paradox without using a spaceship
Forget about anti-ageing creams and hair treatments. If you want to stay young, get a fast spaceship. That is what Einstein's Theory of Relativity predicted a century ago, and it is commonly known as "twin ...
Testing Einstein's E=mc2 in outer space
(Phys.org)—University of Arizona physicist Andrei Lebed has stirred the physics community with an intriguing idea yet to be tested experimentally: The world's most iconic equation, Albert Einstein's E=mc2, may be cor ...
Time travel theory avoids grandfather paradox
Pulsar in stellar triple system makes unique gravitational laboratory
Astronomers using the National Science Foundation's Green Bank Telescope (GBT) have discovered a unique stellar system of two white dwarf stars and a superdense neutron star, all packed within a space smaller ...
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 ...