what are the three theories that provide explanations for dark matter. Explain briefly
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what are the three theories that provide explanations for dark matter.
Explain briefly
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- 1. What is escape velocity? 2. What does it mean to have a binding energy? 3. Under what conditions would you have to achieve in order for a satellite to escape the gravitational field of another body? 4. Why don't astronauts feel the effects of gravity while in orbit around Earth? 5. Why don't we feel the physical attraction from people around us, if there is a force of gravity between every obiect containing mass?Scientists claim that empty space has an undetectable form of energy known as “dark energy.” This theory is needed to explain wich of the following? * A) The galaxies in the universe are getting brighter. B) The universe is heating up. C) The universe is expanding at an increasing speed. D) The stars and planets in the universe are getting louder.What is the point of view on the topic of parallel universes and black holes? Start with a background on the topic that is in one's voice only
- Please answer all of themOver the lifetime of the Universe, the dynamics of its expansion are dominated by the density of different constituents at different times. Ignoring expansion, what is the proper order for which constituent dominates from early to later times? Select one: a. First matter, then dark energy, then radiation b. First radiation, then matter, then dark energy c. First dark energy, then radiation, then matter d. First radiation, then dark energy, then matterPlease answer the second question(everything in the bottom sentence.) please explain how you reached your answer.
- Please answer correctlyHow can we determine the existence of something we can't see? What is the evidence of dark matter and dark energy? How can we learn more about this phenomena?What is the point of view on the topic of parallel universes and black holes? Start with an introduction that is in one's voice only and then lead into a thesis showing what's intended to be proven.