Q: If there is no observable edge to the universe, can we determine where its center of expansion is?…
A: Let’s explain by taking a simple example of a balloon analogy to explain the expansion of the…
Q: Please explain this question If the universe had expanded more slowly than it did, the transition…
A: Required : How is the argument wrong.
Q: How do physicists measure the expansion rate of the universe?
A: How do physicists measure the expansion rate of the universe?
Q: (b) Draw the shape of the Milky Way for a spaceship with a velocity of 20%, 50%, and 90% of the…
A:
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: So if our universe is about 15 billion years old. Do we think this because we can't see farther away…
A: We are known the age of universe. We are given that age of universe is about 15 billion years. There…
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 do you think of the statement: The universe has no center and no edge (or boundary)?
A: The description of the universe that it has no centre and no edge actually tells a lot about the…
Q: Is the universe open or closed?
A: the universe as "closed," "open," or "flat," meant that the density of the universe was either so…
Q: What exactly is dark matter?
A: Particles that do not absorb, reflect, or emit light, hence cannot be detected by electromagnetic…
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: Explain why it only appears that we are at the center of expansion of the universe and why an…
A: Universe is expanding from everywhere and it has no center of expansion. Materials expand from a…
Q: Consider three periods in the history of the Universe: one million years after the Big Bang (age = 1…
A: In early times, the Universe was expanding at a rapid pace. Then, the rate of expansion of the…
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: 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 the twin paradox?
A: the twin paradox is a thought experiment in special relativity involving identical twins, one of…
Q: How do we know galaxies are moving away from us?
A: Electromagnetic radiations are affected by the Doppler shift. When the source is in relative motion…
Q: What is meant by the critical density of the universe? Why is this quantity important to…
A: The critical density is the average density of matter necessary for the Universe's expansion to come…
Q: To what extent do astronomers have the ability to see into the history of the universe?
A: Introduction: We are all aware that time travel is not feasible, so an astronomer cannot use A time…
Q: In the reading, you were told that there were roughly 10,000 galaxies in the image of the Hubble…
A: Given: one image of hubble ultra deep field is roughly 10 square arcminutes. Number of galaxies in…
Does it make sense to ask, “If the universe is expanding, what is it expanding into?”
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