Physics

Replies / Views	Last post
If H equals 50 km/s/Mpc, then a galaxy with a radial velocity of 50,000 km/s will have a distance of ... Started by corkyiscool3328	1 Replies 82 Views	Jul 27, 2018 by s.meritte
When two galaxies collide, they pass through each other and their stars almost never collide. a. ... Started by ahriuashd	3 Replies 146 Views	Jul 27, 2018 by ErinKing
When a large galaxy collides with a small galaxy, the smaller galaxy may be pulled apart by tidal ... Started by crazycityslicker	1 Replies 125 Views	Jul 27, 2018 by Ashley I
Poor clusters of galaxies often contain an excess of E and S0 galaxies. a. True b. False ... Started by renzo156	1 Replies 81 Views	Jul 27, 2018 by meryzewe
The Large and Small Magellanic Clouds are satellites galaxies of the Milky Way. a. True b. False ... Started by Haya94	1 Replies 106 Views	Jul 27, 2018 by Amiracle
The Local Group of galaxies is dominated by the presence of spiral galaxies. a. True b. False ... Started by a0266361136	3 Replies 217 Views	Jul 27, 2018 by recede
Double-lobed radio galaxies appear to be emitting jets of gas and radiation. a. True b. False ... Started by FButt	1 Replies 108 Views	Jul 27, 2018 by todom5090
The radio radiation emitted by a radio lobe is mainly synchrotron radiation. a. True b. False ... Started by MirandaLo	1 Replies 111 Views	Jul 27, 2018 by iceage
Seyfert galaxies are spiral galaxies with active cores. a. True b. False Indicate whether the ... Started by dmcintosh	1 Replies 115 Views	Jul 27, 2018 by voltaire123
Active galaxy radio lobes and jets contain magnetic fields. a. True b. False Indicate whether ... Started by rl	3 Replies 108 Views	Jul 27, 2018 by wtf444
The rapid fluctuations of quasars show that the energy emitting portions of these objects must be ... Started by biggirl4568	1 Replies 76 Views	Jul 27, 2018 by whitcassie
Quasar redshifts are usually larger than the redshifts of the visible galaxies. a. True b. False ... Started by big1devin	1 Replies 111 Views	Jul 27, 2018 by kusterl
If a quasar has a redshift of 0.98, then it is receding from Earth at 98 percent the speed of light. ... Started by roselinechinyere27m	1 Replies 192 Views	Jul 27, 2018 by Tabitha_2016
For a galaxy to be active, the supermassive black hole needs to have matter flow into it. a. True ... Started by magmichele12	3 Replies 149 Views	Jul 27, 2018 by mbcrismon
How does the rotation curve method differ from the analysis of binary stars? What will be an ... Started by sdfghj	1 Replies 114 Views	Jul 27, 2018 by tandmlomax84
Why can't galaxy evolution go from elliptical to spiral to irregular? What will be an ideal ... Started by ericka1	1 Replies 149 Views	Jul 27, 2018 by frankwu0507
What evidence do we have that large galaxies cannibalize small galaxies? What will be an ideal ... Started by misspop	1 Replies 98 Views	Jul 27, 2018 by chloejackso
Why is the number of galaxies in the Local Group uncertain? What will be an ideal ... Started by tichca	3 Replies 104 Views	Jul 27, 2018 by kbennett34
Discuss the observational differences between spiral, elliptical, and irregular galaxies. What ... Started by elizabeth18	1 Replies 86 Views	Jul 27, 2018 by sultana.d
Describe the kind of observations that have led astronomers to believe that supermassive black holes ... Started by jake	1 Replies 68 Views	Jul 27, 2018 by jointhecircus
What observational evidence do we have that eruptions in the centers of galaxies involve magnetic ... Started by newyorker26	1 Replies 109 Views	Jul 27, 2018 by AngeliqueG
Why should we expect quasars to be small? How small should we expect them to be? What will be an ... Started by 09madisonrousseau09	3 Replies 358 Views	Jul 27, 2018 by shayla
Why are there few quasars at low redshifts and at high redshifts but many at redshifts of about 2? ... Started by panfilo	1 Replies 105 Views	Jul 27, 2018 by karmakat49
What observational evidence do we have that quasars are the centers of very distant galaxies? ... Started by mpobi80	1 Replies 93 Views	Jul 27, 2018 by 1_Step_At_ATime
Hypothesize what kind of galaxy would result from two similar-mass interacting spiral galaxies and ... Started by ARLKQ	1 Replies 82 Views	Jul 27, 2018 by Madisongo23