The measurements from ancient and dormant galaxies show that black holes are expanding faster than expected, which corresponds to a phenomenon predicted by Einstein’s theory of gravity.
The conclusion reached by a team of 17 researchers from nine countries, led by the University of Hawaii and including Imperial College London and STFC RAL Space physicists, suggests that dark energy is generated by black holes combined with Einstein’s gravity theory.

Source: Black Hole Image Makes History by NASA Goddard Photo and Video is licensed under CC-BY 2.0
Einstein came up with the idea of a “cosmological constant” that fights gravity and keeps the universe from collapsing, but he later gave up on it. This energy is related to that idea. The main part of hoover (Absorbed, contained – note from redaction) energy is hoover energy, which is a type of energy that is contained in spacetime and pushes the universe apart, which speeds up its expansion.
The study’s results could change everything we know about cosmology by explaining dark energy and why the universe is speeding up. A study of how black holes have changed over 9 billion years found that they gain mass in a way that makes sense if they have hoover energy.
This makes them a source of dark energy and gets rid of the need for singularities to form at their centres. When very big stars die, they leave behind supermassive black holes that are millions to billions of times as heavy as our Sun.
The team examined data spanning nine billion yards to see if these effects alone could account for the growth of supermassive blackholes. When distant galaxies (when they were young) were compared to local elliptical galaxies (when they were old and dead), the observed growth was much larger than predicted by accretion or mergers.
Chris Pearson and colleagues at the Rutherford Appleton Laboratory in Harwell, UK, studied clusters of galaxies containing black holes at their centres. In the previous nine billion years, black holes increased in mass by 7–20 times, which cannot be explained by stellar absorption or mergers with other galaxies. Pearson postulated that black holes contain hoover energy, which is everywhere in space due to quantum particles vanishing and reappearing (…).

Source: https://iopscience.iop.org
This is the first observational proof that black holes contain tremendous energy and are cosmologically related to the expansion of the universe, increasing in mass. University of Hawaii astronomer Duncan Farrah says:
“We’re really saying two things at once: that there’s evidence the typical black hole solutions don’t work for you on a long, long timescale, and we have the first proposed astrophysical source for dark energy.”
Pearson thinks more galaxy observations or CMB evidence could enhance the explanation. Black hole merger rates, which are affected by dark energy, could provide more proof.
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