The Dirtiest Fight in Physics Is About the Universe Itself

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The Dirtiest Fight in Physics Is About the Universe Itself

Postby socrat44 on August 31st, 2018, 6:34 am 

The Dirtiest Fight in Physics Is About the Universe Itself
/ Ryan F. Mandelbaum Tuesday 11:45am /

Wherever you look in the cosmos, things don’t seem to add up.
Our human observations of the universe’s structure—
as far back as we can observe—
suggest that there’s around five times more mass
than we see in the galaxies, stars, dust, planets, brown dwarfs,
and black holes that telescopes have observed directly.
We call this mystery mass, or the mystery as a whole, “dark matter.”

Several thousand physicists researching these dark matter-
related mysteries will tell you that dark matter is a particle,
the way that electrons and protons are particles,
that only appears to interact with other known particles
via the gravitational pull of its mass.
But there are a few dozen physicists who instead think that a set of ideas
called “modified gravity” might one day explain these mysteries.
Modified gravity would do away with the need for dark matter via a tweak to the laws of gravity.

https://gizmodo.com/the-dirtiest-fight- ... 1828562461
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