Physics

Observations of galaxies and clusters of galaxies indicate that about ___________ percent of the ...

Started by haleyc112

Starburst galaxies a. contain a large number of very young stars, but very little evidence of gas ...

Started by javeds

An elliptical galaxy could a. evolve into an irregular galaxy when it has used up all of its gas ...

Started by laurencescou

The Virgo cluster a. is the galactic cluster that contains the Milky Way. b. is the oldest known ...

Started by Pineappleeh

Supermassive black holes are believed to be located at the center of many galaxies because a. the ...

Started by lunatika

If H equals 70 km/s/Mpc, then a galaxy with a radial velocity of 2100 km/s has a distance of ...

Started by yoooooman

If a galaxy has a radial velocity of 8000 km/s and the Hubble constant is 70 km/s/Mpc, what is the ...

Started by DelorasTo

If the absolute magnitude, M, of a supernova is 19 and a galaxy is found that contains a supernova ...

Started by daltonest1984

If Galaxy A is found to have a recessional velocity four times greater than Galaxy B, what can you ...

Started by nramada

Of the following, which of the following is the largest object? a. the Milky Way galaxy b. the ...

Started by DelorasTo

What is the Hubble constant essentially a measure of? a. the number of galaxies in the universe ...

Started by ec501234

What factors are important when trying to classify a spiral galaxy? a. amount of dust and gas in ...

Started by lracut11

What is the primary factor in determining the classification for an elliptical galaxy? a. size ...

Started by theo

What distance method did Edwin Hubble use to determine the distance to local galaxies? a. Hubble ...

Started by melly21297

What of the following distance methods is used to determine the distance to the most distant ...

Started by neverstopbelieb

What distance method is used to determine the distance to the most distant galaxies when only a ...

Started by c0205847

What type of galaxies do astronomers believe to be the most common? a. elliptical b. spiral c. ...

Started by CQXA

The letters AGN stand for a. three spectral types of stars. b. active planet. c. active star. ...

Started by 809779

The energy from an AGN is produced by a. the collision of two spiral galaxies. b. the collision ...

Started by B

All __________ galaxies are spiral galaxies that have small, luminous nuclei. a. active b. radio ...

Started by notis

In the double-exhaust model, the radio lobes of a radio galaxy are inflated by a. jets of excited ...

Started by nummyann

The hot spots in a double-lobed radio source a. appear to coincide with the location of the ...

Started by RODY.ELKHALIL

When discovered in the 1960's, a(n) ___________ was found to emit large amounts of energy, but ...

Started by itsmyluck

The radio lobes that are on each side of some radio galaxies and jets from them produce mainly a. ...

Started by rosent76

The fact that many radio lobes emit more intensely from the side away from the galaxy suggests that ...

Started by savannahhooper