What is different about a dwarf galaxy compared to the Milky Way?

Answer 1

A universe is a area in space that contains many galaxies and a galaxy is a group of stars of 100 billion or more. Finally a solar system is a sun/star that has an orbit (gravitational pull) and has planets or other matter orbiting it.

Answer 2

A galaxy is a vast, gravitationally bound collection of billions of stars and their associated "friends."

Their "friends" include nebulae, stellar remnants, planets and a whole host of other smaller particles including the basic elements hydrogen and helium. Galaxies also consist of an important but poorly understood substance called dark matter. It is believed to surround every galaxy and accounts for much of its mass.

Galaxies vary in size and shape. They range from dwarfs that may only consist of a few million stars to giants that can have trillions of them, all orbiting a center of mass. Galaxies are categorized based on their apparent shapes. Elliptical galaxies are bright, featureless spheroids consisting mostly of old, low-mass stars. Spiral galaxies are disk shaped and have a variety of stars, and irregular galaxies are a catch-all for those with no distinct shape.

Many galaxies, including the Milky Way, orbit around what is to believed to be a supermassive black hole--smaller than a pinhead but with the mass of millions or billions of Suns. The supermassive black hole in the center of our galaxy flattens it into a disk with a depth of a few light years, whereas the diameter is about 100,000 light years.

It is estimated that there are between 100-300 billiongalaxies in the observable Universe!

1. A galaxy is system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

Answer 3

Milky Way: The galaxy which encompasses our Sun and solar system. In the `Great Debate' it usually referred to the band of light that runs across the sky and contains most of the visible stars. Today this term is synonymous with the whole of our Galaxy.

Answer 4

The earth is a member of all of those.

The earth is one of the bodies associated with the sun. The "solar system" is the name we use

to describe everything associated with the sun.

The sun is one of an estimated 400 billion stars in this galaxy.

This galaxy is one of an estimated several billion galaxies in the universe.

The "universe" is the name we use to describe: everything

Answer 5

There isn't one. really.

If there is a difference, you could say that the Milky Way is the milky band of light as seen from Earth, whereas the Milky Way Galaxy is the whole galaxy, which includes those bit's we cannot see from Earth.

Best to just accept they are one and the same.

Answer 6

A galaxy is, by definition, any large collection of stars that can be recognized as a distinct physical entity. In terms of the number of stars, a small 'dwarf irregular' galaxy like the Small Magellanic Cloud, has about one billion stars in it, but there are even smaller systems that are recognized as galaxies such as the Leo I and II dwarf galaxies with about 1 million stars in them, and the Draco System with a few hundred thousand stars in it. The largest star cluster, a globular cluster called Messier 15 has about 6 million stars, so we see that for small galaxies, there is a blurring together of what we mean by a galaxy and a large star cluster. In addition to their mass and numbers of stars, a galaxy is a collection of stars and gas which move through the universe independently of the Milky Way. Globular clusters are roundish swarms of stars that orbit the Milky Way, while the Leo and Draco Systems seem to be independent collections of stars.

Many galaxies also continue to form new generations of stars. The Milky Way, and all spiral shaped galaxies like it, produce new stars at a rate of one or two stars per year. These stars are formed in the vast interstellar clouds that account for about 1 to 10 percent of the mass of these galaxies. Globular star clusters, on the other hand, are not currently forming stars because this activity happened billions of years ago and then stopped once all of the gas and dust clouds were used up.

Answer 7

No. The Universe is something quite different - and much bigger than a solar system, or even a galaxy.

No. The Universe is something quite different - and much bigger than a solar system, or even a galaxy.

No. The Universe is something quite different - and much bigger than a solar system, or even a galaxy.

No. The Universe is something quite different - and much bigger than a solar system, or even a galaxy.

Answer 8

Space contains multiple Universe which shrinks and expands. Means that Space has multiple BigBang and Universes. (This point of view is based on Scientist's theory on Universe). (Subramanian, J.R.)

Answer 9

No, there isn't.

The milky way is the name given to the band of stars we see due to the flattened disk-like characteristic shape of our galaxy. We can call our galaxy the milky way galaxy.

Answer 10

A solar system is a star with planets going around. Like our sun (which is a star) and all of its planets. A solar system is the smallest of your three. A galaxy is a group (millions) of stars, each of which may or may not have planets. The universe is everything, which includes hundreds of thousands of galaxies and other stuff too. Since it is everything it is the largest.