Why Would We Expect the Rate of Expansion of the Universe

question 81

Multiple Choice

Why would we expect the rate of expansion of the universe to be slowing down?

• A) The gravitational pull of all objects in the universe on each other would lead to slowdown.
• B) All expansions after explosions naturally slow down with time.
• C) Galaxies feel a kind of friction as they move through space, which slows them down.
• D) The greater the distance between two objects (such as galaxies or superclusters), the harder it is to push them farther apart.

---

Definitions:

Poor Night Sleep

A subjective experience or complaint of inadequate or unrefreshing sleep, often due to disturbances or difficulties in falling or staying asleep.

Cholesterol

A sterol present in the tissues that contributes to heart disease when elevated; transported in the blood plasma of all animals.

Blood Pressure

The amount of force exerted by the heart on the blood as it pumps the blood through the arteries.