According to the Hubble law, if Galaxy A is 10 times more distant than Galaxy B, then Galaxy A is   a. receding 10 times faster than Galaxy B.   b. approaching 10 times faster than Galaxy B.   c. receding 100 times faster than Galaxy B.   d. approaching 100 times faster than Galaxy B.

Q: 1- As the universe expands, a galaxy which is at a distance of  5.0 x 106 pc, is moving away from…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: If a quasar has a recessional velocity of 2.7 × 10 5 km/sec and is determined to be 3600 Mpc, what…

A:

Q: 1. Quasar F (for Far) has the same luminosity as Quasar N (for Near), But F is 10 times further…

A: The relation between luminosity and brightness is given as L = I/d2 where I is apparent brightness…

Q: The traditional theory of the formation of our galaxy CANNOT explain   a. the existence of the disk…

A: a. The existence of the disk of the galaxy

Q: The sun is about 8 kpc from the center of the galaxy. A kpc or kiloparsec is equal to   a. 10…

A: A kpc or kiloparsec is equal to the 1000 parcec Here,  In the option this value is not given

Q: Current evidence suggests that the universe is   a. flat, infinite, and neither expanding nor…

A: To determine: The correct option.

Q: The objects that are detected at the points where the gas of a radio jet hits the extragalactic…

A: The quasar are small and the powerful source if energy that is active core of very distant galaxies.

Q: If galaxy A is three times more distant than galaxy B, then according to the Hubble law, galaxy A…

A: According to Hubble's law, the recession velocity is proportional to the proper distance of the…

Q: Astronomers recently claimed to have discovered the most distant galaxy known. How would they have…

A: Astronomers recently claimed to have discovered the most distant galaxy known. How would they have…

Q: 21-centimeter radiation observations of the galaxy reveal   a. the location of neutral hydrogen…

A: Correct Option is  "a"

Q: Galaxy will emit synchrotron radiation as a sun forms

A: The star forming region of a Spiral Galaxy will emit synchrotron radiation as a sun forms in the…

Q: 3. Determine the Schwartzschild radius and the average density of a black hole formed by the…

A:

Q: If we find a galaxy that is moving away at 72,000 km/s, what does Hubble’s law tells us about the…

A:

Q: Our galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy   a.…

A: Introduction: A galactic corona is used to describe a hot, ionized, gaseous component in the…

Q: The approximate diameter of the disk of the Milky Way is   a. 8.0 A.U.   b. 8.0 light-years.   c.…

A: To determine diameter of the disk of the milky way

Q: The star Betelgeuse is about 197 pc away. How far is Betelgeuse in ly ? In meters? A. 642.2 ly= 2.08…

A:

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 is the name for the spherical cloud of thinly scattered stars and globular clusters that…

A: Given : What is the name for the spherical cloud of thinly scattered stars and globular clusters…

Q: 25) Recall that Hubble’s Law is given by V=HR; this means that H has units of inverse seconds…

A: A parsec is 3.26 light-years and the speed of light is 3 X 105 km/sec. Use 3.156 X 107 sec/yr.

Q: If a galaxy is 9.1 Mpc away from Earth and recedes at 511 km/s, what is H0 (in km/s/Mpc)? 2. What…

A: Note: As per the policy, only the first question will be solved. If you want the solution for other…

Q: he Milky Way's

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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: The large black hole at the center of our galaxy is estimated to be a. 3.7 solar masses. b.…

A: Given : Asked to choose the correct option for the mass of the large black hole present at the…

Q: If an O-type star and our galaxy were at the same distance, which would have a greater magnitude? a)…

A: Given: The O-type star and our galaxy at same distance. The apparent magnitude decreases with the…

Q: In a Universe with Ω=1, without the presence of dark energy, the expansion of the Universe would a.…

A: Dark energy is the energy present in our universe in a high amount which is something 60% and many…

Q: observation made on E

A: Based on the observer's point of view the frequency can change this effect is called Doppler shift.…

Q: What value for the Hubble constant would another galaxy in the universe observe?

A: ANS: c) a unique Hubble constant for that specific location in the universe.

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: galaxy whose spiral arms have a woolly or fluffy appearance are called   a. flocculent.   b.…

A: flocculent:- A galaxy whose spiral arms have a woolly or fluffy appearance are known as flocculent.

Q: The hydrogen Balmer line Hγ has a wavelength of 434.0 nm in the laboratory. It is observed in a…

A: Quasi-stellar objects or quasars are the distant objects in the universe. They are hard to detect…

Q: In the standard model, about when after the Big Bang did the universe become transparent to…

A: Ans is :- C

Q: Which of the following might you expect to be an additional consequence of the fact that galaxies…

A: Given Which of the following might you expect to be an additional consequence of the fact that…

Q: 6. If a spiral galaxy is 20' in diameter and you measure its distance to be 1 Mpc, what is its…

A:

Q: The center of our galaxy lies in the direction of the constellation of   a. Ursa Minor.   b. Ursa…

A: Milky Way: M.W galaxy holds our solar system. Our galaxy falls into a category of barred spiral.…

Q: 2. Suppose an absorption line in a spectrum of light from a very distant galaxy is 5015 Angstroms.…

A: Write the expression for the Dopler’s effect and solve for the speed (v) of the separation, that is…

Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…

A: Population 1 stars are the newer and younger stars.

Q: How do we know there are supermassive black holes driving active galaxies?   a. The cores fluctuate…

A: In this problem, The given data- How do we know there are supermassive black holes driving active…

Q: How fast and in what direction must galaxy A be moving relative to us if an absorption line found at…

A: Relativistic Doppler Effect: When a source emitting waves of certain frequency and wavelength moves…

Q: 6) The redshift of a galaxy is observed to be 1.5. Calculate the recessional velocity of the galaxy.

A: Redshift takes place when the source is moving away from the observer. This reduces the frequency…

Q: The theory that waves of compression move around the galaxy triggering star formation is called   a.…

A: In general, flocculation theory is a process in which the smaller sizes particles gets collided with…

Q: The largest structures in the universe are   a. star clusters.   b. galaxy clusters.   c. galaxy…

A: Given, Structures in the universe

Q: What is the approximate temperature of the universe that we currently observe?   a. 0 K   b. 2.7 K…

A: The temperature of the universe recently measured by the scientists is 2.73 Kelvin.

Q: What is the differences between an E7 and an E0 galaxy? Explain.

A: To explain the correct answer is given below,

Q: What evidence can you cite that the universe is flat?

A: What evidence can you cite that the universe is flat.