Physics

Replies / Views	Last post
At the center of our Galaxy lies A) a quasar. B) a huge emission nebula. C) an intensely bright ... Started by misspop	3 Replies 92 Views	Jul 27, 2018 by macybarnes
The discovery of the cosmic microwave background was important because A) its detection was a ... Started by tuffie	1 Replies 71 Views	Jul 27, 2018 by kjo;oj
Why isn't there water on Venus? What will be an ideal response? ... Started by colton	1 Replies 75 Views	Jul 27, 2018 by leahchrapun
Water is one of the most common substances in the universe, and vital to us on Earth. What happened ... Started by Haya94	1 Replies 60 Views	Jul 27, 2018 by chem1s3
Contrast finding the distances to seventh magnitude M3V and M3Ib stars. What will be an ideal ... Started by armygirl	3 Replies 90 Views	Jul 27, 2018 by nickk12214
All nine planets in the solar system have been visited by spacecraft. Indicate whether the ... Started by ahriuashd	1 Replies 68 Views	Jul 27, 2018 by kishoreddi
Harvard woman astronomer ________ discovered the period-luminosity relation. A) Antonia Maury B) ... Started by fahad	1 Replies 88 Views	Jul 27, 2018 by yeungji
Before the decoupling, A) deuterium produced electrons and positrons. B) protons and electrons ... Started by RRMR	1 Replies 120 Views	Jul 27, 2018 by popopong
Harlow Shapley found the visible disk of the Galaxy is about ________ kpc across. A) 8 B) 30 C) ... Started by rachel9	3 Replies 149 Views	Jul 27, 2018 by jaykayy05
Must we see both spectral lines splitting to find a spectroscopic binary? What will be an ideal ... Started by charchew	1 Replies 136 Views	Jul 27, 2018 by mathjasmine
Why didn't elements heavier than helium form in the first minutes of creation? A) When He-4 was ... Started by tfester	1 Replies 95 Views	Jul 27, 2018 by Tabitha_2016
How did the Hipparcos mission revolutionize our knowledge of stellar properties? What will be an ... Started by tiara099	1 Replies 70 Views	Jul 27, 2018 by smrtceo
While Voyagers were probes that flew past in a few days, Galileo and Cassini are orbiters, designed ... Started by fnuegbu	3 Replies 87 Views	Jul 27, 2018 by Juro
Most of our detailed knowledge of the jovian planets comes from the Hubble Space Telescope. ... Started by jho37	1 Replies 94 Views	Jul 27, 2018 by zogaridan
Explain the difference between radial and transverse velocities. What will be an ideal ... Started by renzo156	1 Replies 48 Views	Jul 27, 2018 by Kimmy
The Galileo probe was deliberately steered into Jupiter's atmosphere, ending its mission. ... Started by TVarnum	1 Replies 83 Views	Jul 27, 2018 by bulacsom
Sagittarius A was first noted due to its strong ________ emissions. A) radio B) X-ray C) ... Started by lidoalex	3 Replies 44 Views	Jul 27, 2018 by CourtneyCNorton
All globular cluster stars belong to Population ________. Fill in the blank(s) with correct ... Started by ereecah	1 Replies 139 Views	Jul 27, 2018 by josephsuarez
The satellite that found the ripples in the cosmic background that led to galaxies is A) COBE. ... Started by JGIBBSON	1 Replies 146 Views	Jul 27, 2018 by Carliemb17
In 1992, COBE observations revealed A) there are small ripples in the microwave background, the ... Started by mrsjacobs44	1 Replies 66 Views	Jul 27, 2018 by popopong
Herschel's map of the Galaxy was too small because ________ blocked much of the starlight. Fill ... Started by newyorker26	3 Replies 105 Views	Jul 27, 2018 by wuly
The tiny ripples in the background radiation COBE found are due to A) bubble-like nature of ... Started by waynest	1 Replies 140 Views	Jul 27, 2018 by princessflame2016
In the cosmological principle, ________ implies that matter and energy are randomly distributed in ... Started by anshika	1 Replies 97 Views	Jul 27, 2018 by Hdosisshsbshs
To determine the distance to a Cepheid, we must measure its ________ of pulsation. Fill in the ... Started by haleyc112	1 Replies 37 Views	Jul 27, 2018 by meltdown117
Why are eclipsing binaries the rarest of the three types discussed? What will be an ideal ... Started by rl	3 Replies 68 Views	Jul 27, 2018 by hanadaa