-Everything we see makes up less than 5% of the universe. About 27% is dark matter and 68% is dark energy.
-Dark energy is the mysterious form of energy that makes up about 68% of the universe. Dark energy has been noted as “the most profound mystery in all of science”.
-While dark matter attracts and holds galaxies together, dark energy repels and causes the expansion of our universe. Both components are invisible.
-More is known about dark matter, since its existence was suggested as early as the 1920s, while dark energy wasn’t discovered until 1998.
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