Physics

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The stars Cygni and Cygni are in the constellation Cygnus. Which statement is true? A) Cygni ... Started by Bob-Dole	3 Replies 47 Views	Jul 27, 2018 by Jmfn03
Why are Mars' seasons more extreme than those of the Earth? A) Mars' axial tilt is slightly more ... Started by ishan	1 Replies 114 Views	Jul 27, 2018 by komodo7
Which body has the densest atmosphere? A) our Moon B) Mercury C) Earth D) Venus E) ... Started by Collmarie	1 Replies 161 Views	Jul 27, 2018 by akemokai
A protogalactic cloud with slow star formation is more likely to form a spiral galaxy than an ... Started by ETearle	1 Replies 91 Views	Jul 27, 2018 by frre432
Grazing incidence optics are critical to focusing A) infrared radiation. B) radio waves. C) ... Started by joesmith1212	3 Replies 42 Views	Jul 27, 2018 by janeli1
The ________ focus reflector needs only a single optical surface to form images. Fill in the ... Started by EAugust	1 Replies 106 Views	Jul 27, 2018 by quynhmickitran
What are redshift surveys designed to show? What will be an ideal ... Started by tfester	1 Replies 51 Views	Jul 27, 2018 by raili21
A protogalactic cloud with very little angular momentum is more likely to form an elliptical galaxy ... Started by Metfan725	1 Replies 80 Views	Jul 27, 2018 by sylvia
How can the image of a single quasar be doubled? What does that tell us about the quasar's distance? ... Started by oliviahorn72	3 Replies 120 Views	Jul 27, 2018 by vickyvicksss
Rigel has an apparent magnitude of + 0.18 and Betelgeuse an apparent magnitude of +0.45. What can ... Started by jenna1	1 Replies 64 Views	Jul 27, 2018 by AmberC1996
Shapley found the globular cluster distribution equally concentrated all along the galactic plane. ... Started by jparksx	1 Replies 66 Views	Jul 27, 2018 by bimper21
The separation of red and blue light in single-lens telescopes is called ________ aberration. ... Started by silviawilliams41	1 Replies 99 Views	Jul 27, 2018 by Dunkey
Why is the Chandra X-ray Observatory critical to mapping intracluster gas? What will be an ideal ... Started by TVarnum	3 Replies 95 Views	Jul 27, 2018 by Gabe
How much brighter will a 4th magnitude star appear than a 6th magnitude star? A) 2.0 times B) 2.5 ... Started by Destiiny22	1 Replies 93 Views	Jul 27, 2018 by Andromeda18
William Herschel made the first map of the Galaxy about 200 years ago. Indicate whether the ... Started by big1devin	1 Replies 60 Views	Jul 27, 2018 by morrie123456
Our most detailed maps of Venus come from A) direct observation from Earth-based optical ... Started by Pineappleeh	1 Replies 77 Views	Jul 27, 2018 by miss_1456@hotmail.com
The black hole mass at the center of a galaxy is generally larger in galaxies with larger central ... Started by cagreen833	3 Replies 115 Views	Jul 27, 2018 by duke02
The instability strip is above the main sequence on the H-R diagram. Indicate whether the ... Started by viki	1 Replies 82 Views	Jul 27, 2018 by epscape
Building new telescopes: With current telescopes, we can see galaxies as they existed 1 billion ... Started by bucstennis@aim.com	1 Replies 121 Views	Jul 27, 2018 by cegalasso
In general, as a telescope's diameter increases, its angular resolution ________. Fill in the ... Started by biggirl4568	1 Replies 69 Views	Jul 27, 2018 by leahm14
How can some mergers activate spirals, and others destroy them? What will be an ideal ... Started by AEWBW	3 Replies 48 Views	Jul 27, 2018 by 6ana001
What can be said with certainty about a red star and a blue star? A) The red star is closer to ... Started by Wadzanai	1 Replies 180 Views	Jul 27, 2018 by diana chang
Why do spirals seem to be more abundant on the HST deep surveys than they are in the present ... Started by kamilo84	1 Replies 45 Views	Jul 27, 2018 by itsakadoozi
Explain how we can estimate that there are about 50-100 billion galaxies in the observable universe. ... Started by justinmsk	1 Replies 75 Views	Jul 27, 2018 by yahahah24021
Which of these binaries would appear most similar in color telescopically? A) O2V and M4Ia B) ... Started by dejastew	3 Replies 37 Views	Jul 27, 2018 by Brummell1998