Question

question 6
dark energy has been hypothesized to exist in order to explain
where darth vader gets his power
the high orbital speeds of stars far from the center of our galaxy
observations suggesting that the expansion of the universe is accelerating
explosions that seem to create giant voids between galaxies

Explanation:

Dark energy is a theoretical concept in cosmology. Observations of distant supernovae led to the discovery that the universe's expansion is accelerating. Dark energy is hypothesized to be the force driving this acceleration. The high - orbital speeds of stars far from the galaxy center are explained by dark matter, not dark energy. The other options are not related to the scientific concept of dark energy.

Answer:

C. observations suggesting that the expansion of the universe is accelerating