Physics

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Compared to stars within the disk, halo stars a. orbit at random inclinations to the galactic ... Started by mia	1 Replies 183 Views	Jul 27, 2018 by JYan
Which stellar population has highly elliptical orbits? a. Pop I extreme b. Pop I intermediate c. ... Started by RODY.ELKHALIL	1 Replies 72 Views	Jul 27, 2018 by ergserg
The center of our galaxy is believed to be occupied by the radio source known as ... Started by joblessjake	1 Replies 70 Views	Jul 27, 2018 by AaaA
The ____________________ of the galaxy contains population I stars, open clusters, and gas clouds. ... Started by fasfsadfdsfa	3 Replies 99 Views	Jul 27, 2018 by abro1885
____________________ are groups of 100,000 to 1,000,000 population II stars firmly bound by gravity. ... Started by nummyann	1 Replies 85 Views	Jul 27, 2018 by tdewitt
The rotation curve of the galaxy provides evidence for the existence of the ____________________ ... Started by APUS57	1 Replies 82 Views	Jul 27, 2018 by Jmfn03
Henrietta Leavitt discovered the period-luminosity relationship for ____________________. Fill in ... Started by jessicacav	1 Replies 62 Views	Jul 27, 2018 by Ksanderson1296
Globular clusters are primarily found in the ____________________ component of the galaxy. Fill ... Started by EAugust	3 Replies 80 Views	Jul 27, 2018 by aliotak
The ____________________ hypothesis suggests that the Milky Way galaxy formed from a single cloud ... Started by dbose	1 Replies 53 Views	Jul 27, 2018 by 1_Step_At_ATime
The _________________ hypothesis includes mergers with smaller galaxies and infalling gas to the ... Started by student77	1 Replies 68 Views	Jul 27, 2018 by SVictor
The production of elements heavier than helium by fusion in stars and during supernova explosions is ... Started by asd123	1 Replies 117 Views	Jul 27, 2018 by macybarnes
Any element heavier than helium is collectively referred to as a _______________. Fill in the ... Started by Metfan725	3 Replies 72 Views	Jul 27, 2018 by tsternbergh47
The center of the Milky Way galaxy must be less than 1 AU in diameter and contain at least 4 million ... Started by nevelica	1 Replies 66 Views	Jul 27, 2018 by scottmt
As viewed from above or face-on, a ____________ spiral galaxy has many branches and spurs, making ... Started by khang	1 Replies 80 Views	Jul 27, 2018 by patma1981
Regions of compression that move at their own speed in the disk and are outlined by the spiral arms ... Started by rmenurse	1 Replies 74 Views	Jul 27, 2018 by smrerig
O and B stars are examples of ________________ that are used to outline the arms in a galaxy like ... Started by brutforce	3 Replies 51 Views	Jul 27, 2018 by Joy Chen
_______________ is the rate at which a star moves across the sky. Fill in the blank(s) with ... Started by Engineer	1 Replies 88 Views	Jul 27, 2018 by blakcmamba
RR Lyrae stars are in the constellation ___________. Fill in the blank(s) with correct ... Started by vinney12	1 Replies 73 Views	Jul 27, 2018 by brittrenee
The center of our galaxy is located in the direction of the constellation of Orion. a. True b. ... Started by arivle123	1 Replies 84 Views	Jul 27, 2018 by yotaSR5
Shapley found the distance to the center of the galaxy by studying the distance to open clusters. ... Started by CORALGRILL2014	3 Replies 108 Views	Jul 27, 2018 by durant1234
The disk of the Milky Way is approximately 20,000 ly in diameter. a. True b. False Indicate ... Started by ENagel	1 Replies 78 Views	Jul 27, 2018 by blazinlyss
The rapid rotation in the outer disk suggests that our galaxy is more massive than previously ... Started by stephzh	1 Replies 67 Views	Jul 27, 2018 by Sierray
Old stars are poor in heavy elements because there were very few previous generations of stars ... Started by brutforce	1 Replies 88 Views	Jul 27, 2018 by raenoj
The disk of the galaxy is older than the halo. a. True b. False Indicate whether the statement ... Started by charchew	3 Replies 126 Views	Jul 27, 2018 by SeanoH09
Spiral tracers tend to be old, luminous stars. a. True b. False Indicate whether the statement ... Started by cabate	1 Replies 85 Views	Jul 27, 2018 by ebe