Evidence that much of the mass of the universe consist of dark energy has come from __________ a) measuring the density of matter in the solar system b) determining the distance to the Coma cluster c) determining the distance to quasars
Q: What evidence is there that quasars occur in distant galaxies? Explain.
A: To explain the correct answer is given below,
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: the
A: The galaxy with stars bulged at the center surrounded by a disc with arms is called a spiral galaxy.…
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: Most of the helium of the universe was produced __________ a) In stars b) In quasars c) At the…
A: To find: Most of the helium of the universe was produced
Q: 21) If the Hubble's constant for a universe is 25 km/s/Mly. Calculate the distance to a galaxy that…
A: Edwin Hubble discovered through observation that the Universe is expanding. Galaxies are moving away…
Q: 21) If the Hubble's constant for a universe is 15 km/s/Mly. Calculate the distance to a galaxy that…
A: As per the observations made by Edwin Hubble, it was seen that the galaxies were moving away from…
Q: As the universe expands, which type of cosmic energy has a density that falls off most quickly? 1.…
A:
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: Hubble's law is the observation in the cosmology regarding the motion of the galaxies away from the…
Q: Explain why Olbers’s paradox is not a paradox.
A: In the early history of astronomy, it was believed that the universe is static, infinite, uniform,…
Q: 3. Determine the Schwartzschild radius and the average density of a black hole formed by the…
A:
Q: Describe some of the characteristics of the universe that are explained by the standard Big Bang…
A: Given, Big Bang theory of universe
Q: what are some fundamental properties of late type galaxies that our theories of galaxy formation…
A: All those galaxies which are included under Spiral and Irregular Galaxies are termed as Late Type…
Q: What observation in astronomy, made AFTER the discovery of quasars, was a big help to astronomers in…
A: A quasar is an enormous object same like star. It also shines very brightly. It sends out radio…
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: What started the clumping of matter in the early universe that eventually became the seeds of…
A: The force that is carried by the field of virtual astronomical particles in the quantum field is…
Q: A galaxy has a visible mass of 10 Mo and a flat rotation curve extending to 25 kpe at the level of…
A: Let MT denote the total mass of the galaxy. Let R and v denote the radius of the galaxy and velocity…
Q: Can you give me some samples of observation on big Bang theory experimen
A: The Big Bang theory is currently the one with the greatest evidence supporting it as the universe's…
Q: At what redshift will the Lya line (2o = 1215°A) be centered in the Johnson-Cousins U band? (Quasars…
A: From the redshift formula, we have 1+z=λobsλemitz=redshiftλobs=obserevd…
Q: Theory predicts that the irregularities in the hot gas of the big bang should be how many degrees in…
A: The cosmologists analyze the irregularities within the intensity of the CMB using sophisticated…
Q: What was the most startling discovery about the universe that occurred in 1998? O its expansion is…
A:
Q: Explain how the Hubble law allows you to estimate the distances to galaxies.
A: According to Hubble's law, the velocity of galaxy with respect to earth is directly proportional to…
Q: 3. Consider the following two universes: Universe I: flat, matter-dominated with no cosmological…
A:
Q: Which of the following is an accurate statement about quasars?
A: ANS: They are abnormally massive, luminous stars at the cores of ancient galaxies.
Q: A galaxy is found to be receding at a velocity of 3.0 x 104 km-s-1. Calculate the distance to the…
A: Edwin Hubble discovered through observation that the Universe is expanding. Galaxies are moving away…
Q: 7.) Explain what dark energy implies for the composition and age of the universe.
A: Dark energy is a hypothetical form of energy that is believed to exist in the universe and is…
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: wolume of a s
A: The average density of spherical galaxy is given as, ρ=M43πr23
Q: 3. What are heat engines? How do they work? 2. How is the second law expressed? Give examples. 4…
A: Sadi Carnot, the father of thermodynamics, was one of these scientists, publishing Reflections on…
Q: What do you expect the temperature of the CMB to be when the Universe has expanded to 4.70 times its…
A: Required : Temperature of the CMB if the universe has expanded 4.7 times times its current size.
Q: Calculate the critical density necessary for a closed universe for two extremes of the Hubble…
A: The critical density necessary for a closed universe for two extremes of the Hubble constant. given,…
Q: If a galaxy is 8.8 Mpc away from Earth and recedes at 498 km/s, what is H0 (in km/s/Mpc)? _______…
A: The required value of Hubble’s constant is, The required value of Hubble time is,
Q: 46 Figure 44-12 is a hypothetical plot of the recessional speeds v of galaxies against their…
A:
Q: Explain how astronomers determined that the universe is expanding.
A: In universe there are millions of stars. These stars are always moving towards Earth or away from…
Q: 4) Calculate the redshift of a galaxy with a recessional velocity of 0.68c. (
A: When a celestial object is moving away from the observer the light observed from the object will…
Q: Which of the following is true about the astronomical object known as MB7! O a M87 is the result of…
A: Neutron stars are very dense dead stars. In the second collision, a black hole of 10 solar masses…
Q: 5) The recessional velocity of a galaxy is found to be 0.52c. Calculate the redshift.
A: Redshift takes place when the source is moving away from the observer. This reduces the frequency…
Q: A black hole in the center of a nearby Galaxy has a Schwarzchild radius of 2.0*10^7 km. How many…
A: Given : - A black hole in the center of a nearby Galaxy has a Schwarzschild radius of 2.0*10^7 km…
Evidence that much of the mass of the universe consist of dark energy has come from __________
a) measuring the density of matter in the solar system
b) determining the distance to the Coma cluster
c) determining the distance to quasars
d) observing extremely distant supern
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