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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.
Scientists prove that antimatter can't escape gravity
The Evolving Search for the Nature of Dark Energy - Berkeley Lab – Berkeley Lab News Center
Physicists chip away at mystery of antimatter imbalance
Antigravity Could Replace Dark Energy as Cause of Universe's Expansion
What Is Dark Energy? Is Dark Matter Real? - Aydem Perakende
Does Dark Energy Exist? Einstein's General Relativity Could Rid Us of the Need for Universe's Most Mysterious Force
Vanessa Janek, Author at Universe Today - Page 3 of 4
Dark Energy Archives - Page 9 of 10 - Universe Today
30,000 Feet Over Nevada [2797 x 3730] [OC] : r/EarthPorn
What Does the Future of the Universe Hold?, Science
Controversial new theory of gravity rules out need for dark matter, Physics