Physics

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Discuss how astronomers know that our galaxy contains spiral arms in its disk. What will be an ... Started by jc611	1 Replies 36 Views	Jul 27, 2018 by shaquita
Compare and contrast the properties of disk and halo stars. What will be an ideal ... Started by Diane	3 Replies 28 Views	Jul 27, 2018 by jjorrostieta
What evidence do we have that the center of our galaxy contains magnetic fields? What will be an ... Started by Sportsfan2111	1 Replies 25 Views	Jul 27, 2018 by jesse.fleming
___________ have elongated nuclei with spiral structure extending from the ends of the elongations. ... Started by jilianpiloj	1 Replies 28 Views	Jul 27, 2018 by fdliggud
A megaparsec is equivalent to a. 3.26 light-years. b. 206,265 AU. c. the age of our solar ... Started by Tirant22	1 Replies 26 Views	Jul 27, 2018 by TINA
A mega-parsec (Mpc) is equivalent to a. 3.26 light-years. b. 206,265 light years. c. 1,000,000 ... Started by erika	3 Replies 30 Views	Jul 27, 2018 by frre432
The Hubble law is a relation between a galaxy's a. mass and its luminosity. b. distance and its ... Started by cnetterville	1 Replies 44 Views	Jul 27, 2018 by pallen55
The total mass of galaxies in a cluster of galaxies divided by the number of galaxies in the cluster ... Started by Hungry!	1 Replies 56 Views	Jul 27, 2018 by lorealeza
__________ can be used to determine the galaxy's mass if the galaxy is reasonably close, so that the ... Started by haleyc112	1 Replies 37 Views	Jul 27, 2018 by olderstudent
Gravitational lensing a. occurs when light passes near a massive object and is deflected by the ... Started by crazycityslicker	3 Replies 60 Views	Jul 27, 2018 by Smiles0805
Poor clusters a. contain more than 1000 stars and are found in the halo of the galaxy. b. ... Started by ssal	1 Replies 80 Views	Jul 27, 2018 by ciecieme
A ___________ generally contains well over 1000 galaxies and is quite dense. They often contain many ... Started by tsand2	1 Replies 147 Views	Jul 27, 2018 by asdfghjkl;
The Milky Way is part of I. a poor cluster. II. a rich cluster. III. the Virgo Cluster. IV. the ... Started by Hungry!	1 Replies 75 Views	Jul 27, 2018 by izzat
___________ are produced when two galaxies pass near each other and pull large streamers of stars, ... Started by leo leo	3 Replies 147 Views	Jul 27, 2018 by Melissahxx
Mathematical models indicate that ___________ galaxies are produced by high-speed collisions in ... Started by renzo156	1 Replies 16 Views	Jul 27, 2018 by Smiles0805
The look-back time is a. the time it takes for the light from an object to reach Earth. b. ... Started by vinney12	1 Replies 70 Views	Jul 27, 2018 by flexer1n1
The mass of a single galaxy might be found by a. the double galaxy method. b. the rotation curve ... Started by ENagel	1 Replies 61 Views	Jul 27, 2018 by blfontai
Most of the mass of a galaxy is contained in the a. massive O and B stars in the galaxy. b. H I ... Started by jc611	3 Replies 47 Views	Jul 27, 2018 by blazinlyss
Galactic cannibalism refers to a. binary galaxies. b. the merging of galaxies. c. galaxies ... Started by strangeaffliction	1 Replies 60 Views	Jul 27, 2018 by batool
Astronomers now speculate that a galaxy's shape depends on all of the following except a. the ... Started by SGallaher96	1 Replies 21 Views	Jul 27, 2018 by morganmarie791
We should expect galaxies to collide fairly often because a. they are large with respect to their ... Started by Wadzanai	1 Replies 48 Views	Jul 27, 2018 by bigsis44
___________ galaxies contain large clouds of gas and dust, both young and old stars, but have no ... Started by natalie2426	3 Replies 43 Views	Jul 27, 2018 by cloud
The rotation curve of a galaxy can be used to determine a. the relative number of hot young stars ... Started by luvbio	1 Replies 60 Views	Jul 27, 2018 by apple
The Milky Way galaxy is part of a. the Virgo cluster. b. the Large Magellanic Cloud. c. the ... Started by CBme	1 Replies 82 Views	Jul 27, 2018 by fauacakatahaias
It is believed that ring galaxies form a. when two galaxies collide at high speeds. b. when two ... Started by Zoey63294	1 Replies 49 Views	Jul 27, 2018 by Christopher