Search results for general theory of relativity

Quantum Physics Jul 5, 2017

Physicists provide support for retrocausal quantum theory, in which the future influences the past

(Phys.org)—Although there are many counterintuitive ideas in quantum theory, the idea that influences can travel backwards in time (from the future to the past) is generally not one of them. However, recently some physicists ...

Astronomy Jul 26, 2018

First successful test of Einstein's general relativity near supermassive black hole (Update)

Observations made with ESO's Very Large Telescope have for the first time revealed the effects predicted by Einstein's general relativity on the motion of a star passing through the extreme gravitational field near the supermassive ...

General Physics Apr 6, 2010

Our universe at home within a larger universe? So suggests wormhole research

(PhysOrg.com) -- Could our universe be located within the interior of a wormhole which itself is part of a black hole that lies within a much larger universe?

General Physics Jan 30, 2015

Black holes do not exist where space and time do not exist, says new theory

(Phys.org) —The quintessential feature of a black hole is its "point of no return," or what is more technically called its event horizon. When anything—a star, a particle, or wayward human—crosses this horizon, the ...

General Physics May 15, 2007

A Two-Time Universe? Physicist Explores How Second Dimension of Time Could Unify Physics Laws

For a long time, Itzhak Bars has been studying time. More than a decade ago, the USC College physicist began pondering the role time plays in the basic laws of physics — the equations describing matter, gravity and the ...

Astronomy Dec 1, 2023

Do we live in a giant void? That could solve the puzzle of the universe's expansion, research suggests

One of the biggest mysteries in cosmology is the rate at which the universe is expanding. This can be predicted using the standard model of cosmology, also known as Lambda-cold dark matter (ΛCDM). This model is based on ...

General Physics Nov 25, 2016

Theory that challenges Einstein's physics could soon be put to the test

Scientists behind a theory that the speed of light is variable - and not constant as Einstein suggested - have made a prediction that could be tested.

Archaeology Aug 31, 2017

Fossil footprints challenge established theories of human evolution

Newly discovered human-like footprints from Crete may put the established narrative of early human evolution to the test. The footprints are approximately 5.7 million years old and were made at a time when previous research ...

Space Exploration Jan 20, 2017

What is the Alcubierre "warp" drive?

It's always a welcome thing to learn that ideas that are commonplace in science fiction have a basis in science fact. Cryogenic freezers, laser guns, robots, silicate implants… and let's not forget the warp drive! Believe ...

Astronomy Jan 14, 2012

Scientists gear up to take a picture of a black hole

On Wednesday, Jan. 18, astronomers, physicists and scientists from related fields will convene in Tucson, Ariz. from across the world to discuss an endeavor that only a few years ago would have been regarded as nothing less ...

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