Pergunta 17 2 pts Which of the following statements about the nature of the Dark
ID: 120319 • Letter: P
Question
Pergunta 17 2 pts Which of the following statements about the nature of the Dark Energy is accurate? Without Dark Energy, the cosmic expansion rate would be increasing with time Without Dark Energy, the ages of globular clusters would be consistent with (less than) the age of the Universe. It is possible that the Dark Energy has the properties of Einstein's "Cosmological Constant" O Discovery of the Dark Energy suggests the existence of a "zoo" of undiscovered subatomic particles Dark Energy cannot be explained by the quantum-mechanical energy density of the vacuum (empty space).Explanation / Answer
17. Which of the following statements about the nature of the dark energy is accurate?
Answer: [C] It is possible that the dark energy has the properties of Einstein's "cosmological constant"
Explanation: Even today astronomers refer to one theory of dark energy as Einstein's cosmological constant. Back then Einstein didn't know that the universe was expanding and found that his equations didn't work for a static universe. So he threw hypothetical repulsive force that would fix the problem by balancing things, which he called the cosmological constant.