Physics

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Tycho used his high accuracy observations to conclude that the Earth revolves around the sun. ... Started by Chelseaamend	1 Replies 106 Views	Jul 27, 2018 by emily12345
The Sun's magnetic field is very weak compared to Earth's. Indicate whether the statement is true ... Started by HudsonKB16	3 Replies 117 Views	Jul 27, 2018 by Eunice618
Some giant elliptical galaxies are found to have disks of gas and dust with star forming regions, ... Started by arivle123	1 Replies 81 Views	Jul 27, 2018 by ebe
The galactic center lies in the direction of which constellation? A) Orion B) Leo C) Taurus D) ... Started by joe	1 Replies 79 Views	Jul 27, 2018 by jointhecircus
A typical solar flare lasts only a few days. Indicate whether the statement is true or ... Started by jasdeep_brar	1 Replies 66 Views	Jul 27, 2018 by janeli1
Two stars both lie on the main sequence. Star X is spectral type A, while Star Y is spectral type G. ... Started by ssal	3 Replies 197 Views	Jul 27, 2018 by tanna.moeller
The lunar highlands appear brighter than the mare, because these highlands are due to meteor impact ... Started by jCorn1234	1 Replies 474 Views	Jul 27, 2018 by fdliggud
For measuring the distances to galaxies within 17 Mpc, we rely primarily on ________ variable stars. ... Started by lidoalex	1 Replies 85 Views	Jul 27, 2018 by trampas
As they move through space, the vibrating electrical and magnetic fields of a light wave must move ... Started by bobbysung	1 Replies 113 Views	Jul 27, 2018 by smrerig
All planets orbit the Sun in the same direction (counterclockwise as viewed from above Earth's North ... Started by cnetterville	3 Replies 121 Views	Jul 27, 2018 by Dinolord
Does a planetary nebula have anything to do with planets? Explain. What will be an ideal ... Started by lracut11	1 Replies 62 Views	Jul 27, 2018 by memslove
Compared to our Sun, most stars in the halo are A) old, red, and bright and have fewer heavy ... Started by pane00	1 Replies 72 Views	Jul 27, 2018 by tofugiraffe
Meteorites can come from A) Mars. B) the cores of asteroids. C) the crusts and mantles of ... Started by future617RT	1 Replies 87 Views	Jul 27, 2018 by yotaSR5
Which of the following is considered by biologists to be a likely place where life might have first ... Started by student77	3 Replies 40 Views	Jul 27, 2018 by frre432
Blue stars are always more luminous than red stars. Indicate whether the statement is true or ... Started by sabina	1 Replies 105 Views	Jul 27, 2018 by mceravolo
The more massive planets in the solar system tend to be less dense than the lower mass planets. ... Started by michelleunicorn	1 Replies 121 Views	Jul 27, 2018 by lorealeza
The Tully-Fisher relation uses the rotational speed of the galaxy to measure its ________. Fill ... Started by 123654777	1 Replies 134 Views	Jul 27, 2018 by blakcmamba
The sunspot cycle averages about 11 months. Indicate whether the statement is true or ... Started by Kikoku	3 Replies 105 Views	Jul 27, 2018 by mceravolo
Why are we unlikely to find Earth-like planets around halo stars in the Galaxy? A) Halo stars ... Started by karen	1 Replies 181 Views	Jul 27, 2018 by dominiqueenicolee
As white light passes through a prism, the red (longer) wavelengths bend less than the blue ... Started by lb_gilbert	1 Replies 147 Views	Jul 27, 2018 by Jmfn03
The Local Group consists of about ________ galaxies. Fill in the blank(s) with correct ... Started by CQXA	1 Replies 98 Views	Jul 27, 2018 by Beatricemm
Why has star formation ceased in the galactic halo? A) The halo has no gas at all. B) There are ... Started by big1devin	3 Replies 279 Views	Jul 27, 2018 by honnalora
Today most scientists favor the capture theory of the Moon's origin, since it would explain why the ... Started by WWatsford	1 Replies 71 Views	Jul 27, 2018 by Sweetkitty24130
Observations of sunspots at different solar latitudes prove that the Sun, like the gas giants, ... Started by Bernana	1 Replies 61 Views	Jul 27, 2018 by maya.nigrin17@yahoo.com
Will our Sun become a supernova? Why? What will be an ideal ... Started by MirandaLo	1 Replies 35 Views	Jul 27, 2018 by yeungji