which correctly relate dark matter and dark energy to the big bang theory? Select two correct answers.
a. dark energy is the source of 25% of the mass of the universe
b. because of dark matter, gravitational interactions cause galaxies to develop
c. without dark energy, structures in the early universe would never have developed
d. through dark energy, the universe is expanding at a faster and faster rate
c. without dark energy, structures in the early universe would never have developed
d. through dark energy, the universe is expanding at a faster and faster rate
The correct answers are:
b. because of dark matter, gravitational interactions cause galaxies to develop.
Explanation: Dark matter is a hypothetical form of matter that does not interact with light or other electromagnetic radiation, making it difficult to detect. However, its presence is inferred through its gravitational effects on visible matter. The gravitational interactions caused by dark matter play a crucial role in the formation of galaxies in the universe.
d. through dark energy, the universe is expanding at a faster and faster rate.
Explanation: Dark energy is another hypothetical component of the universe that is believed to be responsible for the observed accelerated expansion of the universe. It is thought to make up approximately 68% of the total mass-energy content of the universe. Dark energy acts as a repulsive force that counteracts gravity, causing the universe to expand at an increasing rate over time.
b. because of dark matter, gravitational interactions cause galaxies to develop
c. without dark energy, structures in the early universe would never have developed