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: Cite an evidence that we are living in an expanding universe.
A: The universe we are living in is expanding. This is evident from Hubble's observations in 1929. A…
Q: I'm having trouble understanding this. Suppose we have a spaceship about the size of a typical…
A: The mass of the ship is M = 130 million kilograms = 1.3×108 kg The required velocity is 12 % of the…
Q: What are the three important pieces of evidence that led scientists to accept the Big Bang as the…
A: The Big Bang model is one of the many theories that were developed to explain the birth of the…
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: Explain why the early universe contained only hydrogen but now contains a large variety of different…
A: Hydrogen is the simplest atom in the universe. At the beginning of the universe, when the big bang…
Q: What is the difference between hot dark matter and cold dark matter? What difference does that make…
A: Dark matter is a mysterious substance that makes up almost 85% of the universe's total mass. It…
Q: What major factor determines the future of the universe? Why?
A: Earlier cosmologist believed that due to gravity of supermassive black holes and many other massive…
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: I'm doing a debate about Kalam cosmological. I need to have an example of something out of nothing…
A: Answer:- Atomic physics, Nuclear Physics, Relativistic Physics , Quantum physics, Thermodynamic and…
Q: What if the Andromeda galaxy were to disappear How long before we would notice?
A: About 2.5 million light-years separate our solar system from the Andromeda galaxy. If it vanished,…
Q: What is Big Bang theory?
A: Astronomers have given several theories and facts for the galaxies moving away from our galaxy.…
Q: According to the cosmological principle, our place in the universe does not appear to be…
A: According to the cosmological principle, our place in the universe does not appear to be…
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: 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: 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: What happened before the Big Bang?
A: The Answer is given below:
Q: What does the size difference of the irregularities in the background radiation tell us about the…
A:
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: Where did all the antimatter go?
A: Anti-particle came into light in the 20th century when famous physicist Paul Dirac was trying to…
Q: State the three problems of the Hot Big Bang model in cosmology, and briefly explain how inflation…
A: The three main problems of the Hot Big Bang model in cosmology are the horizon problem, the flatness…
Q: What is the estimated age of the Universe (in years) if the Hubble constant is 70 km/s/Mpc?
A:
Q: According to the Big Bang Theory, order from earliest to latest, the sequence of events that are…
A: Before the Big bang all the forces were united. During the first fraction of a second, the forces…
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: Assume a flat Friedmann-Robertson-Walker universe. Calculate the redshift z at which the temperature…
A:
Q: The Analysis of the Big Bang Theory.
A: Universe is the whole yonder which consists of many many miles of life both living and unliving. Its…
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: Why do we think that nothing, other than light, can travel faster than the speed of light?
A: According to the Einstein’s theory of relativity nothing can travel faster than light.
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: Explain the Higher-Order Systems?
A:
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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