TRUE OR FALSE: Current mass estimates and deceleration rates tell us that our universe is closed
Q: Estimate the age of the Universe, in years, using an outdated value of 99.90 km/s/Mpc for Hubble’s…
A: Outdated value is, 99.9 km/s/Mpc So, the age of universe is calculated as, Age= 1Outdated value
Q: What evidence is there that quasars occur in distant galaxies? Explain.
A: To explain the correct answer is given below,
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: As the Universe becomes older, what effect will that have on a slope of the Hubble's diagram: It…
A: Doppler effect in light is the change in frequency of light observed by the observer when the source…
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: How do physicists measure the expansion rate of the universe?
A: How do physicists measure the expansion rate of the universe?
Q: The overall composition of the universe is Select one: Oa. 2% ordinary matter, 98% exotic dark…
A: To provide Composition of the universe.
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 is dark matter, and what evidence exists for it? What effect does dark energy have on the…
A:
Q: Astronomers have measured the age of the Universe to be about 14 billion years. Explain how this age…
A: Astronomers estimated that the age of universe is about 12 to 14 billion years. There are two…
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: 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: cceptable theoryaboutthe origin of the formation of universe and what does it state about the…
A: The widely accepted theory for the origin and evolution of the universe is the Big Bang model,…
Q: How do black holes form and what is their effect on the surrounding universe?
A: One of the strangest things in the universe is Blackholes. Blackholes are highly massive and the…
Q: Calculate the age of the universe when its temperature was 10¹¹ K.
A: The universe was once part of a singularity of very high density and temperature. All the forces and…
Q: Which galaxies are moving the fastest away from us?
A: Our nearest galaxy is Milky way.
Q: What is the the steady-state theory of the universe, and why was it abandoned? What theory do we…
A: A per the Steady-State theory, the universe is always expanding but it is maintaining a constant…
Q: What does the size difference of the irregularities in the background radiation tell us about the…
A:
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: How black holes made us?
A:
Q: When the universe was approximately one second old its size grew by a factor of 10 to the power of…
A: When the universe was approximately one second old its size grew by a factor of 10 to the power of…
Q: Estimate the temperature of the universe when it was approximately 1 minutes old
A: Our universe is thought to be formed from a singularity of infinite density and temperature. It…
Q: If a galaxy is 9.3 Mpc away from Earth and recedes at 508 km/s, what is H, (in km/s/Mpc)? |km/s/Mpc…
A: velocity, v=508 km/s distance, d=9.3 Mpc=9.3×3.086×1019 Km=28.7×1019 Km. Hubble constant,…
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: Evidence that much of the mass of the universe consist of dark energy has come from __________ a)…
A: To find: Evidence that much of the mass of the universe consist of dark energy has come from
Q: What was the lowest temperature for photons to be able to produce 0 particles in the early universe?…
A: Given: kT=mc2
Q: How can you explain the fact that the Andromeda Galaxy appears to be approaching us rather than…
A: Each element emits photons only at a certain wavelength. They form either emission or absorption…
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: Calculate the age of the universe for the following Hubble's constant, (a) 50 km/s/MDC
A: As per Hubble's law, the universe is expanding. The recessional velocity of galaxies is directly…
Q: Describe what is meant by Olbers’ paradox. Explain how it is solved by our modern understanding of…
A: Olbers' paradox explains the dark effect of the sky. It is also known as the dark night sky paradox.…
Q: Describe the age and temperature of stars that make up spiral galaxies and their location.
A: A galaxy can be bombarded by other, smaller galaxies. Even if a galaxy is isolated, internal…
Q: Calculate the age of the universe for the following Hubble's constant, m (c) 80 km/s/Mpc Of
A:
Q: Calculate the age of the universe when the temperature was 10¹ K.
A: The age of the universe when the temperature was 1013 K. Given, TemperatureT=1013 K
Q: how big is the universe in numbers
A: The universe is made up of all of space, time, and everything that exists within them, including all…
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: If the value of the Hubble constant is 70 kilometers per second per Mpc, then what is the Hubble…
A: Given information: The value of the Hubble's Constant (H0) = 70 km/s/Mpc We know that 1 Mpc =…
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: What is negatively curved universe?
A: A surface has negative curvature at a point if the surface curves away from the tangent plane in two…
Q: Why do we believe there is dark matter? b) What important discoveries were made early in the 20th…
A: Dark matter is a hypothesized kind of stuff that is considered to make up around 85% of all matter…
Q: Evidence that much of the mass of the universe consist of dark energy has come from __________ a)…
A: Option
Q: With the aid of one or more diagram, explain how observations of the CMB can be used to determine…
A: In a flat or zero curvature universe, Euclidean geometry applies at the very largest scales. This…
TRUE OR FALSE: Current mass estimates and deceleration rates tell us that our universe is closed
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