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.

Is Dark Energy Really Repulsive Gravity?

Dark energy: The eerie force accelerating the expansion of the universe

An overview of dark energy. – Explaining Science

Repulsion between Matter and Antimatter

Antigravity Could Replace Dark Energy as Cause of Universe's Expansion - Universe Today

Cosmodynamics – Medium

An overview of dark energy. – Explaining Science

The Evolving Search for the Nature of Dark Energy - Berkeley Lab – Berkeley Lab News Center

Cosmology Archives - Page 16 of 18 - Universe Today