What group of galaxies is the Local Group in?

What group of galaxies is the Local Group in?

Bottom line: The Local Group of galaxies consists of three large galaxies – the Andromeda Galaxy (biggest), our Milky Way (2nd-biggest) and the Triangulum Galaxy (3rd biggest) – along with 50 or so much-smaller dwarf galaxies.

Are the galaxies in the Local Group moving?

Is the Local Group expanding along with the entire Universe? (Intermediate) The Local Group of Galaxies (Milky Way, Andromeda, etc) moves towards the Local Supercluster.

Is Local Group bigger than Milky Way?

There are over 30 galaxies that are considered to be in the local group, and they are spread over a diameter of nearly 10 million light years, with the center of them being somewhere between the Milky Way and M31. M31 and the Milky Way are the most massive members of the Local Group, with M33 being the 3rd largest.

How many galaxys are in the Local Group?

The Local Group includes 36 galaxies. The Milky Way, our galaxy, is one of the larger ones. Its closest neighbors are the Large Magellanic Cloud and the Small Magellanic Cloud. Much farther away, 2.3 million light years from the Milky Way, is the Andromeda Galaxy, and 2.7 million light years away is galaxy M33.

How do giant ellipticals get so big?

Giant elliptical galaxies are generally thought to be the result of galaxy mergers. Ordinary elliptical galaxies may also form in this manner, or may have formed from the gravitational collapse of an interstellar gas cloud.

What does Local Group mean?

Local Group, in astronomy, the group of more than 20 galaxies to which the Milky Way Galaxy belongs. About half are elliptical galaxies, with the remainder being of the spiral or irregular type.

Is light from Andromeda blue-shifted?

The light from the center of andromeda isn’t blue-shifted, according to images from the Hubble space telescope, but the light from the areas around the center is blueshifted.

Does the Local Group orbit anything?

The Milky Way in its turn revolves around the gravity center of the Local Group which includes Andromeda and the Magellan Clouds. The Local Group in turn orbits some point within the Virgo Supercluster.

How old is the Local Group?

Distance 3.2 million light years. Quite isolated in space, membership to Local Group established in 1999. Most remote from barycenter member thought to be in the Local Group.

What is the biggest galaxy in the Local Group?

The Andromeda Galaxy
The Andromeda Galaxy (M31), seen here in ultraviolet light, is the largest galaxy in the Local Group with some 1 trillion stars — roughly twice the population of our own Milky Way.

Is supercluster bigger than Local Group?

These giants are believed to have formed through the merging of other galaxies. The density of large galaxies in the Virgo Cluster is about ten times greater than that in the Local Group. The enormous gravity of the Virgo Cluster makes it the center of a larger structure, called the Local Supercluster.

Are elliptical galaxies old?

Ellipticals are old. The stars that live within them are among the oldest in the universe. Unlike their spiral cousins, elliptical galaxies have shut down their star formation engines. Devoid of much of the needed gas and dust, they no longer create new stars.

Do elliptical galaxies have old stars?

Because elliptical galaxies contain older stars and less gas, scientists think that they are nearing the end of the evolutionary line for galaxies. The universe is a violent place, and collisions between galaxies are frequent — indeed, the Milky Way is due to crash into the Andromeda Galaxy in a few billion years.

How fast is the local group of galaxies moving?

600 kilometers per second
“These measurements, confirmed by the Cosmic Background Explorer satellite in 1989 and 1990, suggest that our galaxy and its neighbors, the so-called Local Group, are moving at 600 kilometers per second (1.34 million miles per hour) in the direction of the constellation Hydra.”

Does blue Shift exist?

There are in all about 100 known galaxies with blueshifts out of the billions of galaxies in the observable universe. Most of these blue-shifted galaxies are in our own local group, and are all bound to each other.

Does Blue Shift exist?

Is there a black hole at the center of every galaxy?

Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way. Astronomers can detect them by watching for their effects on nearby stars and gas. This chart shows the relative masses of super-dense cosmic objects.

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