Dark energy and universal antigravitation
A.D. Chernin
Lomonosov Moscow State University, Shternberg State Astronomical Institute, Universitetskii prosp. 13, Moscow, 119889, Russian Federation
Universal antigravitation, a new physical phenomenon discovered astronomically at distances of 5 to 8 billion light
years, manifests itself as cosmic repulsion that acts between
distant galaxies and overcomes their gravitational attraction,
resulting in the accelerating expansion of the Universe. The
source of the antigravitation is not galaxies or any other bodies
of nature but a previously unknown form of mass/energy that
has been termed dark energy. Dark energy accounts for 70 to
80% of the total mass and energy of the Universe and, in
macroscopic terms, is a kind of continuous medium that fills
the entire space of the Universe and is characterized by positive
density and negative pressure. With its physical nature and
microscopic structure unknown, dark energy is among the most
critical challenges fundamental science faces in the twenty-first
century.
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