Physics

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How are the jets produced by radio galaxies similar to those produced by protostars? What will be ... Started by mia	1 Replies 71 Views	Jul 27, 2018 by b614102004
What are two advantages of CCDs over photographic films for astronomy? What will be an ideal ... Started by ETearle	1 Replies 67 Views	Jul 27, 2018 by Liddy
Halo stars are all Population II objects. Indicate whether the statement is true or ... Started by bcretired	3 Replies 44 Views	Jul 27, 2018 by spencer.martell
The cosmological redshift is not really a velocity at all, but a measure of the expansion of ... Started by Brittanyd9008	1 Replies 89 Views	Jul 27, 2018 by robbielu01
Compared to the size of the Sun, stars of all types range from A) 0.5 to 50 solar radii. B) 0.1 ... Started by renzo156	1 Replies 69 Views	Jul 27, 2018 by alexisweber49
A star near the lower right of the H-R diagram is likely to be A) red, with high luminosity. B) ... Started by danielfitts88	1 Replies 55 Views	Jul 27, 2018 by mk6555
The planet which shows us the widest range of surface temperatures between day and night is A) ... Started by AEWBW	3 Replies 97 Views	Jul 27, 2018 by abro1885
How do quasars produce so much energy in such a small volume? What will be an ideal ... Started by Pineapplelove6	1 Replies 56 Views	Jul 27, 2018 by maaaaaaaaaa
Olbers's paradox is solved in part by the fact that the universe is neither infinitely large nor ... Started by j.rubin	1 Replies 126 Views	Jul 27, 2018 by miss.ashley
Of all the planets, the axial tilt and rotation period of ________ is most like our own. A) Earth ... Started by aabwk4	1 Replies 90 Views	Jul 27, 2018 by bdobbins
Molly measures a Hubble constant of 20 km/sec/million light-years. Sam measures a Hubble constant of ... Started by Mimi	3 Replies 252 Views	Jul 27, 2018 by 1_Step_At_ATime
While featureless in visible light, we can see some detail in Venus' clouds using A) radio waves. ... Started by drink	1 Replies 97 Views	Jul 27, 2018 by deja
The Doppler shift is used to find A) astrometric binaries. B) spectroscopic binaries. C) ... Started by genevieve1028	1 Replies 63 Views	Jul 27, 2018 by trog
________ are great wrinkle marks on Mercury's crust, due to its core contracting. A) Rilles B) ... Started by james9437	1 Replies 95 Views	Jul 27, 2018 by Koolkid240
If the value of H has not changed since the Big Bang, then H = 70 km/s/Mpc will give a Hubble Time ... Started by Bob-Dole	3 Replies 52 Views	Jul 27, 2018 by micaelaswann
Around us in the galactic plane, we find stars of a variety of ages and compositions. Indicate ... Started by wenmo	1 Replies 36 Views	Jul 27, 2018 by bfulkerson77
If the value of H is doubled, it would also double the age of the universe. Indicate whether the ... Started by bio_gurl	1 Replies 35 Views	Jul 27, 2018 by Amiracle
In the Big Bang model, two possible fates exist: expansion forever, or cosmic collapse. Indicate ... Started by Mr3Hunna	1 Replies 82 Views	Jul 27, 2018 by Eunice618
The most effective wavelengths to see through the clouds of Venus to the surface are A) radio. B) ... Started by olgavictoria	3 Replies 104 Views	Jul 27, 2018 by milbourne11
In a uniformly expanding universe, which statement best describes the situation as viewed from an ... Started by abarnes	1 Replies 66 Views	Jul 27, 2018 by katkat_flores
The planet ________ has the least variation in temperatures on the surface between day and night. ... Started by roselinechinyere27m	1 Replies 156 Views	Jul 27, 2018 by at
The critically bound universe, with omega = 1, is saddle shaped. Indicate whether the statement ... Started by deesands	1 Replies 66 Views	Jul 27, 2018 by Shshxj
The thickness of the Galaxy near the Sun is about 1000 light-years. Indicate whether the ... Started by mckennatimberlake	3 Replies 101 Views	Jul 27, 2018 by ecox1012
A gravitationally bound universe, with omega greater than 1.0, will expand forever. Indicate ... Started by SAVANNAHHOOPER23	1 Replies 92 Views	Jul 27, 2018 by wergv
The orbits of Population II stars and globular clusters are much like comets, rising high above the ... Started by bclement10	1 Replies 76 Views	Jul 27, 2018 by wtf444