Suppose two galaxies move away from each other at 6000 km/sec and are 300 million (3x103) light-years apart. If their speed has remained constant, how long has it taken them to move that far apart? Express your answer in years. (2points)

Q: If p = 2.7 x 10-27 kgm-3, what is the radius of curvature Ro of Einstein's static universe? How long…

A: Given: Density,ρ=2.7×10-27kg/m3Speed of light,c=3×108m/sEinstein's constant,κ=1.86×10-26m/kg Albert…

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: Which of the following is FALSE (NOT TRUE)? A) The Doppler effect can be used to measure the radial…

A: False statement  (B) we can measure the distance to galaxies using parallax.

Q: "The Big Bang" pg. 165, question 2 In Diagram A, is the universe becoming bigger, smaller, or…

A: Universe is expanding all the time since the big bang.

Q: For each of the quantities below, indicate whether they are distance, time, or velocity. Then…

A: Quantity Time, distance, or velocity Value Unit Year Time 3.156×107 s Light-year…

Q: Using our example from the previous unit, let's try to determine the Hubble time for this example…

A: Solution     Given dataSpeed v=4000km/sDistance d=20Mpcwhat would the age of that universe be in…

Q: Suppose we find an Earth-like planet around one of our nearest stellar neighbors, Alpha Centauri…

A:

Q: The spectral lines of various elements are detected in light from a galaxy in the constellation Ursa…

A: The equation for red shift is, λobs=λ1-vc

Q: Observations of distant galaxies show O they appear older than they really are. the size of the…

A: We are able to observe  because of light reach us from the stars.

Q: If a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H0 (in km/s/Mpc)?  km/s/Mpc…

A: The question above has been given from Hubble's law. This law is also known as the Hubble-Lemaitre…

Q: given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years)…

A: Given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years) =…

Q: Suppose a galaxy is moving away from Earth at a speed 0.78c. It emits radio waves with a wavelength…

A: Doppler effect is the change in frequency and wavelength of a wave due to the motion of the source…

Q: Galaxy B moves away from galaxy A at 0.519 times the speed of light. Galaxy C moves away from galaxy…

A:

Q: The sprinter trarela a distance of 18. m in t. Explanation of Solution Given The mass of the…

A: It is given that the initial velocity of the runner is 0m/s (the runner starts from rest) and the…

Q: Pretend that galaxies are spaced evenly, 2.0 Mpc apart, and the average mass of a galaxy is 1.0 x…

A: We know that:-Spherical galaxy average density,ρ=M43πr23         Equation 1r=2.0 Mpcconvert Mpc to…

Q: A light year is the distance traveled by light in one year. Identify the distance to a nearby galaxy…

A: Given data:  Distance of galaxy = 2×106 light years Speed of light (c) = 3×108 m/s Required:…

Q: In 1998 a galaxy named RD1 was discovered with a redshift of 5.34. (a) What is the speed of this…

A: (a) It is given that z=5.34 , 1+β1-β=1+z Squaring both sides, 1+β1-β=6.342 =…

Q: A crew on a spacecraft watches a movie that is two hours long.the spacecraft is moving at high speed…

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Q: If we knew that a distant galaxy were 8.56 x 1021 meters away from earth, what velocity could we…

A: The velocity of a distant galaxy can be calculated using Hubble's Law. Hubble's Law states that the…

Q: A galaxy is observed to be at 10.0 Mpc from Earth. If it is receding at 520 km/s, calculate the…

A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…

Q: Perhaps the most fundamental problem in all of astronomy is the determination of distance to the…

A: "The Hubble Law relates the recessional speed of distant objects (measured with the Doppler Effect)…

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A: **As per our company guidelines we are supposed to solve only one question (if there are multiple…

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: is 0.218 arcseconds, then the distance of the body from the Earth in astronomical units is * O…

A:

Q: The orbital speed of a star about the center of the Milky Way is determined by its distance from the…

A: The galactic center is orbited by the Sun. Therefore, if we are able to calculate the Sun's speed…

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 B moves away from galaxy A at 0.541 times the speed of light. Galaxy C moves away from galaxy…

A: We have to use special theory of relativity to solve this problem

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Q: Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus…

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Q: An astronomer observed the motions of some galaxies. Based on his observations, he made the…

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Q: What would be your estimate for the age of the universe if you measured Hubbleʹs constant to be 33…

A: We are given the value of Hubble constant. We are to find the age of universe. We are also given the…

Q: According to the tiny world experiment, there are only 5.2 intermediates between any two people on…

A: Assuming that the number of intermediaries between any two people on Earth is directly…

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: Pretend that galaxies are spaced evenly, 7.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕…

A: The average density of matter in the universe is given by

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Q: 9. An alien observer is located in the disk of a spiral galaxy at a distance of Ro = 10 kpc from the…

A: From the given equation, vr=ΩR-ΩR0R0sinlvr=ΘR-ΘR0R0sinl…

Q: Suppose a galaxy is moving away from Earth at a speed of 0.78c. It emits radio waves of 0.680 m.…

A: Due to the Doppler shift when light from a source that is moving away is detected it will have a…