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Astronomy The Solar System

Physics & Astronomy

Quiz 23 :

Large-Scale Structure in the Universe

Quiz 23 :

Large-Scale Structure in the Universe

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What does the large-scale structure of the universe look most like?
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A

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The Virgo Cluster is at an estimated distance of 16.5 Mpc.What is the average recession speed of the cluster, assuming a Hubble constant of 70km/s/Mpc?
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A

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Which of the following is true about the Great Attractor?
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D

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Astronomers estimate distances to large numbers of distant galaxies using
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The diameter of the Local Group of galaxies is closest to which of the following distances?
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Which of the following fills the space between galaxies in a cluster?
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Our galaxy is part of the ________ Supercluster.
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Which of the following is a way in which astronomers detect dark matter in clusters of galaxies?
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Astronomers can estimate distances to the galaxies in the figure below because of img
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The figure below shows a small section of the Virgo Cluster.The indicated galaxy can be classified as img
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Scientists estimate the following quantities for the Coma Cluster: the total mass of the cluster is Mtotal ~ 1.3 1015 MSUN, the total mass of all stars is Mstars ~ 3 1013 MSUN, and the mass of the hot X-ray-emitting gas is Mgas ~ 1 1014 MSUN.What is the corresponding percentage of dark matter within the Coma Cluster?
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Which of the following provides direct evidence for the existence of dark matter?
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A galaxy has a peculiar velocity due to the effects of
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Filaments and voids are hallmarks of
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Understanding the distribution of galaxies in the universe requires the construction of a three-dimensional map where for each galaxy we need to know its position and
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Which of these is the correct order of collections of galaxies, from smallest to largest?
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The most common type of galaxy found in a galaxy cluster is a ________ galaxy.
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The peculiar velocity of a galaxy describes its motion relative to the
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Dark matter constitutes ________ of the mass in galaxy clusters, while the majority of non-dark matter mass is found in ________.
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In order to use Hubble's law to find the distance to a galaxy, astronomers need to measure that galaxy's
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