Learn vocabulary, terms, and more with flashcards, games, and other study tools. c. expand, but gradually slow down.
b. expand and then contract. therefore only energy densities. 16. Dark energy, which causes the universal expansion to accelerate with time The key piece of evidence showing that the expansion of the universe is accelerating is that the most distant type Ia supernovae are fainter than they would be if the expansion is not accelerating.
Start studying Astronomy Chapters 14-18 (Questions). If the hypothetical dark energy continues to dominate the Universe's energy balance, then the current expansion of … In a Universe with dark energy as well as dark matter, the initial deceleration is reversed at late times by the increasing dominance of dark energy. If a universe is dominated by dark energy, it will a. expand forever.
For a flat Universe model with Ωm = 0.30 and ΩX = 0.70 for wX = −1 the dark energy–dominated era begins at z∗ eq = 0.33, which is almost a factor of two lower than zacc for this very model.
Start studying Chapter 25 - Cosmology. d. remain static. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Start studying Chapter 16 - Dark Matter, Dark Energy, Fate of the Universe. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Start studying Astronomy Ch. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
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