Far out cosmology: gravity constant the Big Bang (Introduction)

by David Turell , Tuesday, August 30, 2022, 16:01 (814 days ago) @ David Turell

Latest study:

https://www.sciencealert.com/gravity-has-stayed-constant-for-the-entire-age-of-the-univ...

"For over a century, astronomers have known that the Universe has been expanding since the Big Bang. For the first 8 billion years, the expansion rate was relatively consistent since it was held back by the force of gravitation.

"However, thanks to missions like the Hubble Space Telescope, astronomers have since learned that roughly 5 billion years ago, the rate of expansion has been accelerating.

"This led to the widely-accepted theory that a mysterious force is behind the expansion (known as Dark Energy), while some insist that the force of gravity may have changed over time.

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"But according to a new study by the international Dark Energy Survey (DES) Collaboration, the nature of gravity has remained the same throughout the entire history of the Universe.

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"So far, the DES Collaboration has measured the shapes of over 100 million galaxies, and the observations all match what General Relativity predicts. The good news is that Einstein's theory still holds, but this also means that the mystery of Dark Energy persists for the time being."

Comment: That means dark matter must exist.