what is the difference between spiral elliptical and irregular galaxies?
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A spiral galaxy consists of a spinning, flattened disk with arms that rotates very fast. An elliptical galaxy is the most common type of galaxy, has a roundish shape, and demonstrates little or no star formation. An irregular galaxy is a galaxy with no defined shape that has very young stars.
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So, how do irregulars form? It seems that they are typically formed through gravitational interactions and mergers of other galaxies. Most, if not all of them began life as some other galaxy type. Then through interactions with each other, they became distorted and lost some, if not all of their shape and features.
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What are the four main parts of a spiral galaxy? A halo, bulge, dish, and arms.
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Its about 3 million light years from Earth; Andromeda Galaxy is about 2.5 million light years away, and the Triangulum Galaxy is 750,000 light years from the Andromeda Galaxy. So, it in answer to your question, light takes about 3 million years to reach us from M33 (Triangulum Galaxy).
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Orbits come in different shapes. All orbits are elliptical, which means they are an ellipse, similar to an oval. For the planets, the orbits are almost circular.
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['Milky.', 'Spiral.', 'Elliptical.', 'Galactic.', 'Interstellar.', 'Stellar.', 'Gravitational.', 'Dwarf.']
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The key difference is that the Moon is further away from the Earth during an Annular as compared to a Total Eclipse. This gives the appearance of the Moon being smaller in the sky, and it no longer completely covers the Sun. Instead, a 'ring of fire' remains – the Sun still emits direct light.
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A spiral galaxy like the Milky Way has three basic components to its visible matter: the disk (containing the spiral arms), the halo, and the nucleus or central bulge.
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The main difference between Oval and Elliptical is that the Oval is a shape and Elliptical is a type of curve on a plane. An oval (from Latin ovum, "egg") is a closed curve in a plane which "loosely" resembles the outline of an egg. ... The three-dimensional version of an oval is called an ovoid.
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Regular echinoids have no front or back end and can move in any direction. Irregular echinoids have a definite front and back and do move in a particular direction. This is because regulars and irregulars have very different ways of life.
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A galaxy contains stars, gas, and dust. In a spiral galaxy like the Milky Way, the stars, gas, and dust are organized into a bulge, a halo, and a disk containing spiral arms. Elliptical galaxies have a bulge shape and a halo, but do not have a disk. Bulge—A round structure made up primarily of old stars, gas, and dust.
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All verbs, whether regular or irregular, have five forms [often called principal parts]. ... The difference between a regular and an irregular verb is the formation of the simple past and past participle. Regular verbs are dependably consistent—the simple past ends in ed as does the past participle.
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The most fundamental difference between the galaxy types is that spiral galaxies have a rotating disk of gas in which ongoing star formation can occur, while elliptical galaxies do not. Therefore, once gas is stripped out of a galaxy, it can no longer have a gaseous disk.
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An important difference between them is that they can create factors that are correlated or uncorrelated with each other. Rotations that allow for correlation are called oblique rotations; rotations that assume the factors are not correlated are called orthogonal rotations. Our graph shows an orthogonal rotation.
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Astronomers group galaxies by shape, and although there are many different types of galaxies, most fall into one of three categories: spiral, elliptical or irregular.
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In Hubble's scheme, which is based on the optical appearance of galaxy images on photographic plates, galaxies are divided into three general classes: ellipticals, spirals, and irregulars. Hubble subdivided these three classes into finer groups. Hubble's system of classification for galaxies.
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Galaxies are not scattered randomly throughout the universe, but are clumped together into clusters. Clusters of galaxies are not scattered randomly throughout the universe, but are clumped together into 5A superclusters.