Antigravity could replace dark energy as cause of Universe's expansion

Since the late 20th century, astronomers have been aware of data that suggest the universe is not only expanding, but expanding at an accelerating rate. According to the currently accepted model, this accelerated expansion is due to dark energy, a mysterious repulsive force that makes up about 73% of the energy density of the universe. Now, a new study reveals an alternative theory: that the expansion of the universe is actually due to the relationship between matter and antimatter. According to this study, matter and antimatter gravitationally repel each other and create a kind of “antigravity” that could do away with the need for dark energy in the universe.

Anti-Gravity Research

Nothing, not anything and zero

Is the anti-matter universe real? If so, is anti-gravity the same thing as gravity but instead of pulling, it pushes? - Quora

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Flat universe

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New theory may solve the mysterious and dark matter and dark energy •