Explain why the temperature of the cosmic background radiation is 2.725 K, and how this temperature evolves over time.
Q: The cosmic microwave background consists of: huge clouds of dark matter interspersed with equally…
A: Cosmic microwave background also known relic radiation. Cosmic microwave background is kind of…
Q: State the problems of the Hot Big Bang model in cosmology, and briefly explain how inflation solves…
A: Given the question; we need to state the problems of the Hot Big Bang model in cosmology and explain…
Q: We didn't specifically discuss this in class but the first stars to form from the cosmic microwave…
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Q: Which of the following statements about the cosmic background radiation are true? It is the result…
A: In this question we have to analyze the given options and determine which statements are true about…
Q: What would the universe look like if there was complete cemetery between matter and antimatter?
A: What would the universe look like if there was complete cemetery between matter and antimatter?
Q: How can astronomers view events that happened in the universe’s distant past?
A: We all know that time travel is not possible, so an astronomer can't go into the past using a time…
Q: What was the temperature of the universe when the recombination took place that produced the cosmic…
A: Around 400,000 years after the big bang, the space was completely filled with a hot soup of…
Q: Is antimatter, dark matter, dark energy, and degenerate matter all t
A: Antimatter, dark matter ,dark energy and degenerate matter are not all the same thin. Antimatter:…
Q: What is dark matter, and what evidence exists for it? What effect does dark energy have on the…
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Q: Explain Fermi Paradox?
A: This is a question related to astrophysics. Fermi Paradox: Fermi paradox can be defined as the…
Q: What are the possible fates for the universe? What do they depend on? What appears to be the actual…
A: In cosmology, the possible fates of the universe are broadly categorized into several scenarios…
Q: Calculate the critical density of our universe.
A: Our universe is expanding and critical density is defined as the average density of matter that is…
Q: What is the evidence that the universe was very uniform during its first 400,000 years?
A: The universe was formed from a big explosion called Big Bang. In the beginning, everything was…
Q: What causes cosmic microwave background energy?
A: The cosmic microwave background (CMB) is believed to be the leftover radiation from the Big Bang. As…
Q: How might you relate the big bang to yourself as a physical entity? What elemental parts of your…
A: After Big Bang their is a very fast expansion of universe. In that state the energy and matter is…
Q: Explain the term Gravitational lensing?
A: Gravitational lensing is the term that is used to describe the bending and distortion in the path of…
Q: b) The cosmic microwave background dates to a time when the universe was -380,000 years old, or to a…
A: Given: 380000 years ago Tr=3000 Kz=1100
Q: The present number density of electrons in the Universe is the same as that of protons, about 0.2…
A: The present number density of electrons = 0.2m-3. Long before the formation of microwave background,…
Q: 17). If you were to live another 65 years and there was a starship ready to go right now, how fast…
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Q: What does the size difference of the irregularities in the background radiation tell us about the…
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Q: Considering the reactions in primordial nucleosynthesis only, what would be the impact on the…
A: So the lifetime of neutrons is very crucial in shaping the universe as it is now. Even a slight…
Q: ne cosmic "dark ages" represent that time in the history of the universe hen:
A: The question can be solved as follows
Q: What is the evidence that the universe was very uniform during its first 400,000 years?
A: The evidence of the uniform nature is explained by particle physics. Before the formation of the…
Q: What was the lowest temperature for photons to be able to produce 0 particles in the early universe?…
A: Given: kT=mc2
Q: As you hurtle across the Universe at the speed of light you turn on a flashlight and point it in…
A: Here comes the relativistic concept of speed/ velocity.
Q: The Cosmic Microwave Background is remarkable in many ways. Let's illustrate this by personalizing…
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Q: Assume a flat Friedmann-Robertson-Walker universe. Calculate the redshift z at which the temperature…
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Q: The cosmic microwave background radiation is strong evidence for the Big Bang theory because it: (a)…
A: The objective of the question is to understand why the cosmic microwave background radiation (CMBR)…
Q: What is the Big Bang? What evidence do we see in the Universe that everything-which-exists exploded…
A: Bigbang - It is presumably more like a balloon being gust up. A balloon begins small and dilates…
Q: What is cosmic infalation ? Explain it.
A: Cosmic inflation: This is the theory based on the inflation in the cosmology. It was developed in…
Q: Describe the Big Bang theory. What evidence supports this theory, and what are its implications for…
A: The Big Bang theory is the leading cosmological model that explains the origin and evolution of the…
Q: Hello from 2042! (A letter from students’ future selves, narrating their lives 20 years after…
A: The letter that you have been asked is written as follows:Dear 2023 Graduates,Greetings from the…
Q: What evidence can you cite that the expansion of the universe is accelerating?
A: It is observed that galaxies are moving away from Earth at speeds proportional to their distance.…
Q: Explain how astronomers determined that the universe is expanding.
A: In universe there are millions of stars. These stars are always moving towards Earth or away from…
Q: Where did the atoms that were the cause of the big bang originate from?
A: As the universe cooled, conditions became just right to give rise to the building blocks of matter –…
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