Chemistry, 25.02.2021 14:00 alexiss7026

How do scientists know dark energy exists? a
We can only detect it by observing the effect of gravity on visible objects.
b
Because the universe we can see is only 4% of what the universe is actually made of.
c
Because it behaves like the opposite of gravity.
d
The observation that all galaxies seem to be moving apart from each other at a faster rate than in the past.

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How do scientists know dark energy exists? a
We can only detect it by observing the effect of...