Milky Way Galaxy - The structure and dynamics of the Milky.

Question: Compare and contrast spiral and elliptical galaxies. Spectacular Space. A galaxy is comprised of dark matter, dust, gas, stars, and star remnants that are bound by gravity.

According to the accretion hypothesis, spiral galaxies are susceptible to starvation: If the inflow of raw material for new stars is cut off, the spiral soon fades, leaving a smooth disk resembling an SO galaxy. Indeed, SO galaxies are generally found in high-density regions where starvation is likely. A disk galaxy that has the misfortune to fall into a rich cluster may be swept clean of.

This Hubble Space Telescope photograph showcases the majestic spiral galaxy UGC 2885, located 232 million light-years away in the northern constellation Perseus. The galaxy is 2.5 times wider than our Milky Way and contains 10 times as many stars. A number of foreground stars in our Milky Way can be seen in the image, identified by their.

A galaxy is a massive, gravitationally bound system that consists of stars, stellar objects (such as brown dwarfs and neutron stars), nebulae, an interstellar medium of gas and dust, black holes, and an unknown component of dark matter.Examples of galaxies range from dwarfs with as few as ten million stars to giants with a hundred trillion stars or more, each orbiting through their galaxy.

We live in one of the arms of a large spiral galaxy called the Milky Way. The Sun and its planets (including Earth) lie in this quiet part of the galaxy, about half way out from the centre. The Milky Way is shaped like a huge whirlpool that rotates once every 200 million years. It is made up of at least 100 billion stars, as well as dust and.

Spiral Galaxies. Spiral galaxies usually consist of three components: a flat disk, an ellipsoidal bulge and a halo. The disk contains a lot of interstellar gas and dust, and most of the stars in the galaxy. The gas, dust and stars in the disk rotate in the same direction around the galactic center at hundreds of kilometers per second and are.

Types and Classification of Galaxies. There are three main types of galaxies: Elliptical, Spiral, and Irregular. Two of these three types are further divided and classified into a system that is now known the tuning fork diagram. When Hubble first created this diagram, he believed that this was an evolutionary sequence as well as a classification.

The Milky Way is the place we call home, as well as about 100 billion other stars. It looks very much like other spiral galaxies when viewed from above. There are spiral arms and a nucleus. Viewed from the side, it is about 140,000 LY in width and the nucleus (core) is about 20,000 LY tall.

Spiral - The spiral galaxy has a number of long arms that are spiraling around the center. In the center of the spiral galaxy are older stars while the arms are generally made of new stars. Barred spiral - This type of galaxy is similar to the spiral but has a long bar in the middle with spirals coming off the ends.

Tags: Determining Galactic Mass Formation Galactic Bulge Galactic Disk Galactic Halo Galactic Recycling HI line Interstellar Dust Radio Observations Spiral Arms Suns location in the Galaxy The Black Hole The Galactic Nucleus The Milky Way Galaxy.

Spiral galaxy is a special kind of galaxy as described by Hubble in his work. It consists of a flat, rotating disk containing Stars, gas and dust and a central concentration of stars known as bulge. These are surrounded much fainter halo of stars many of which reside in globular clusters. They are named for the Spiral structures that extend.

Spiral Galaxies. The Milky Way galaxy and the Andromeda galaxy (frequently referred to as M31) are the most luminous and massive members of the group. M31 is a Hubble Sb type, with a luminous, large bulge of older stars, surrounded by a less-luminous disk of gas, dust, and younger stars, arranged in spiral arms. Its diameter is about 200,000 ly.