How do we know galaxies are moving away from us?
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: The Andromeda Galaxy is a member of the Local Group of galaxies. It is approaching us. Does this…
A: Given Andromeda galaxy is member of the local group of galaxies approaching us. Hubble law Hubble…
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: Does Hubble’s Law have anything to say about the motion of stars relative to other stars in the same…
A: Hubble's law in cosmology is an observation which states that when seen from earth, galaxies are…
Q: Which galaxies are moving the fastest away from us?
A: Our nearest galaxy is Milky way.
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: Explain why galaxies can have different shapes. please explain briefly and clearly
A: Reason why galaxies have different shapes : When we gaze up into the night sky, we can see stars…
Q: Based on Figure 1 below, which galaxies are moving away from us the fastest? Velocity (km/sec) 2000…
A: first option is correct
Q: Can we measure distances to other galaxies using parallax? Why or why not?
A:
Q: Why do theorists feel the universe is flat?
A: Why do theorists feel the universe is flat
Q: What does the redshift of the galaxies tell us about their motion with respect to the Earth?
A: The displacement of the spectrum of an astronomical object toward longer wavelength (red) due to the…
Q: How many galaxies are there in the universe?
A: A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and…
Q: how many Galaxy are there in all?
A: The huge collection of gas, dust, and billions of stars and their stars, which are held together by…
Q: What evidence shows that the universe is flat
A: Exact shape of the universe can not be predicted.
Q: If most galaxies are moving away from us, are we at the center of the universe? Why or why not?
A: Introduction: The universe encompasses everything in existence, from the smallest atom to the…
Q: Under what circumstances would the slope of the best-fitted line in Figure decrease:
A: Required The correct choices.
Q: alaxy? Explain.
A: Given: To explain the how astronomers find the distance of the galaxy is given as,
Q: The surface temperatures and apparent magnitudes of stars in a hypothetical star cluster are…
A:
Q: Are the galaxies red-shifting or blue-shifting? Explain. (You may find the big-bang theory helpful).…
A: This problem can be solved using the Hubble's Law.
Q: what evidence is there that galaxies collide and merge?
A: The delicate distribution of matter in the galaxies causes the galaxies to collide and is said as…
Q: How do we know the whole universe is expanding?
A: Given:- The expansion of the universe is shows by Hubble by twentieth century was the…
Q: If all the distant galaxies are moving away from us, explain why we are not at the center of the…
A: Given: If all the distant galaxies are moving away from us, explain why we are not at the center of…
Q: Astronomers recently claimed to have discovered the most distant galaxy known. How would they have…
A: Astronomers have found a galaxy 13.1 billion light-years from Earth, making it officially the most…
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