Question

1. How did astronomers confirm the existence of dark ENERGY?

Answer 1

Answer:

1. d

2. b

Explanation:

Dark energy is defined as the unknown energy that has an immense impact on the universe. It was first observed from a supernovae measurements, which showed evidence that the universe's expansion was accelerating.

Dark matter makes up approximately 85% of the universe's matter, it is defined as a invisible component that interacts with visible matter through gravity.

Answer 2

By the ages of globular clusters astronomers confirm the existence of dark ENERGY.

By detecting very hot gas in galaxy clusters that emits X-rays astronomers confirm the existence of dark MATTER.