Page 41 - General Relativity News Today

Has all this happened before, and will all this happen once again?

New research has found a critical flaw in modified gravity theories: They allow for effects to occur without causes and for information to travel faster than the speed of light. This is bad … for modified gravity.

Para conseguirmos montar este quebra-cabeça teórico, primeiramente temos que entender o que seria o buraco de minhoca, além do óbvio de que é um túnel formado por distorções no espaço-tempo e pela semântica de cada propriedade.

"Gravitational and electromagnetic interactions are long-range interactions, meaning they act on objects no matter how far they are separated from each other." -Francois Englert One of the most spectacular predictions of Einstein's General Relativity was the existence of gravitational lensing, whereby a large foreground mass could act as a lens, magnifying and distorting the background light source behind it. Although this was first observed for quasars, large galaxy clusters act ...

Reply May 5, 2021 COLLEGE PARK, Md. - Two University of Maryland faculty members—Michele Gelfand, a distinguished professor of psychology, and Alessandra Buonanno a research professor of physics—have been elected to the Gelfand was recognized for her achievements in original research and is known for many innovative projects, including her theories on "tight" and "loose" cultures, as described in her groundbreaking book, "This is such an honor for Michele," said Professor Michael Dougherty,...

Is it groupthink? Or is there a deeper reason?

  On March 2, 2019, astronomers reported discovery of a dozen black holes gathered around Sagittarius A* (Sgr A*), the supermassive monster in the center of the Milky Way Galaxy, supporting a decades-old prediction. After conducting a cosmic inventory to calculate and categorize stellar-remnant black holes, the astronomers from the University of California concluded that there are probably tens of millions of the enigmatic, dark objects in the Milky Way – far more than expected.  Star S2 or...

" " Isaac Newton proved that the force that causes an apple to fall to the ground is the same force that causes the moon to orbit the Earth. This is Newtons Law of Universal Gravitation, which he defined mathematically, using G as the gravitational constant. dmitro2009/Shutterstock Here on the pale blue dot we call home, gravity is something we all experience every second of every day. "Gravity is the glue that causes diffuse matter between the stars to slowly collapse and form new hydr...

Can we travel faster than the speed of light? New mathematical models say… ‘maybe’ An independent news and commentary website produced by academics and journalists. An independent news and commentary website produced by academics and journalists. The closest star to Earth is Proxima Centauri. It is about 4.25 light-years away, or about 25 trillion miles (40 trillion km). The fastest ever spacec...

It’s theoretically possible to travel faster than light using the warp drives seen in ‘Star Trek’ The far-fetched technology can let a starship compress space in front of it while expanding spacetime behind it. Apr 28, 2021 · 11:30 pm Faster than light travel is the only way humans could ever get to other stars in a reasonable amount of time. | Les Bossinas / NASA / Wikimedia Commons The closest star to Earth is Proxima Centauri. It is about 4.25 light-years away...