How did the abundance of helium in the universe suggest the existence of the cosmic microwave background radiation?

Q: We didn't specifically discuss this in class but the first stars to form from the cosmic microwave…

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Q: What is dark matter ?

A: A type of matter hypothesized to account for a large type of mass in the universe it's  the dark…

Q: How do physicists measure the expansion rate of the universe?

A: How do physicists measure the expansion rate of the universe?

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: 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: 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: How does string theory attempt to unify quantum mechanics and general relativity?

A: String theory attempt to unify Quantum mechanics and general relativity

Q: Can I please ask your opinion on what you think of the idea of the Big Bang? How do you interpret it…

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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: 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: How do gamma-ray bursts provide insights into the most energetic events in the universe?

A: Gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant…

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: Why is the cosmic microwave background radiation evidence for a hot Big Bang?

A: The cosmic microwave background radiation (CMBR), is a high wavelength electromagnetic radiation,…

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 is the discovery of dark matter and dark energy so important to our understanding of the…

A: Dark matter and dark energy are one of the mysteries of the universe that are not fully understood.…

Q: Why couldn't atomic nuclei exist when the age of the universe was less than 2 minutes?

A: As per Hubble's theory, the universe is expanding, this means at some point in time there were…