Physics

Replies / Views	Last post
Recent high resolution radio observations show that quasars can be classified as a. exploding ... Started by genevieve1028	1 Replies 90 Views	Jul 27, 2018 by ju
Most galaxies appear to be a. composed of one star and seven planets. b. inside our Milky Way. ... Started by dollx	1 Replies 67 Views	Jul 27, 2018 by mmj22343
Active galaxies are thought to have _______ in their centers. a. accretion disks b. massive ... Started by Yi-Chen	3 Replies 160 Views	Jul 27, 2018 by juwms
Astronomers who discovered quasars found that they show ___________ of their spectral lines and are ... Started by Coya19@aol.com	1 Replies 99 Views	Jul 27, 2018 by ansleighelindsey
Jet-shaped regions of radio and optical emission have been observed in a. quasars. b. radio ... Started by skymedlock	1 Replies 78 Views	Jul 27, 2018 by ciecieme
The Andromeda spiral galaxy is almost edge-on to us. Astronomers have detected the orbital motion of ... Started by james0929	1 Replies 71 Views	Jul 27, 2018 by SAUXC
Evidence that tidal interactions and collisions of galaxies may make ordinary galaxies active is ... Started by nummyann	3 Replies 124 Views	Jul 27, 2018 by Dunkey
The units on the Hubble constant are ____________________, as listed in this chapter. Fill in the ... Started by schs14	1 Replies 79 Views	Jul 27, 2018 by adammoses97
_______________ clusters of galaxies contain closely spaced galaxies and often contain giant ... Started by DyllonKazuo	1 Replies 125 Views	Jul 27, 2018 by abctaiwan
Measuring the Doppler shift of material at various distances from the center of a galaxy can be used ... Started by joblessjake	1 Replies 77 Views	Jul 27, 2018 by Dominic
_____________ galaxies have a definite disk component, but contain no evidence of spiral pattern, ... Started by tuffie	3 Replies 123 Views	Jul 27, 2018 by cuttiesgirl16
Due to the extremely rapid orbital velocities of material near the center of many galaxies, these ... Started by vicotolentino	1 Replies 51 Views	Jul 27, 2018 by Jossy
_________________ galaxies are very luminous at X-ray and ultraviolet wavelengths and have broad ... Started by scienceeasy	1 Replies 97 Views	Jul 27, 2018 by peilian
If the redshift of a quasar were 3, at what wavelength would the 486.1-nm line of hydrogen appear in ... Started by Hungry!	1 Replies 108 Views	Jul 27, 2018 by kkenney
The spectrum of a(n) ____________________ consists of a continuous spectrum and a few highly ... Started by Jkov05	3 Replies 132 Views	Jul 27, 2018 by milbourne11
The high _______________ of quasars reveals to astronomers that they must be very distant. Fill ... Started by elizabeth18	1 Replies 91 Views	Jul 27, 2018 by cegalasso
Merging of galaxies is known as ____________. Fill in the blank(s) with correct ... Started by awywial	1 Replies 74 Views	Jul 27, 2018 by mariahkathleeen
Differences among AGNs as viewed from different inclination angles is known as a ________________. ... Started by arivle123	1 Replies 88 Views	Jul 27, 2018 by memslove
Redshift values of ____ to _____ are distances to when galaxies were growing and merging, Fill in ... Started by jilianpiloj	3 Replies 104 Views	Jul 27, 2018 by Kdiggy
________________ emit radio energy from areas on either side of the galaxy that are inflated by ... Started by humphriesbr@me.com	1 Replies 119 Views	Jul 27, 2018 by gabrielle_lawrence
Where jets run into surrounding gas in the intergalactic medium, ____________ are formed before ... Started by luvbio	1 Replies 78 Views	Jul 27, 2018 by macmac
Elliptical galaxies contain more gas, dust, and young stars than do Sa galaxies. a. True b. ... Started by SAVANNAHHOOPER23	1 Replies 104 Views	Jul 27, 2018 by Liamb2179
The look-back time is numerically equal to the distance to a galaxy in light-years. a. True b. ... Started by segrsyd	3 Replies 97 Views	Jul 27, 2018 by parshano
The rotation curve method can be applied only to pairs of galaxies orbiting each other. a. True ... Started by silviawilliams41	1 Replies 72 Views	Jul 27, 2018 by Fayaz00962
Some large clusters of galaxies do not appear to contain enough mass to hold themselves together. ... Started by cookcarl	1 Replies 58 Views	Jul 27, 2018 by at