Physicists don’t actually know what the universe is really made of. The currently most popular theory is that most of the universe is made of dark matter, a mysterious type of matter that we can only detect through its gravitational pull on other objects. But according to a new paper, we’ve misunderstood how gravity works. The authors say that gravity really can do action at a distance and that explains the observations that we currently ascribe to dark matter. Let’s take a look.
Credit to : Sabine Hossenfelder
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