Asked by: Valme Tikhonov
science space and astronomy

Are there more spiral or elliptical galaxies?

Last Updated: 6th May, 2020

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Astronomers have identified more spiral galaxies than ellipticals, but that's simply because the spirals are easier to spot. Spiral galaxies are hotbeds of star formation, but elliptical galaxies aren't nearly as prolific because they contain less gas and dust, which means fewer new (and brighter) stars are born.

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In this way, what percent of galaxies are elliptical?

The Milky Way, the galaxy where our solar system is located, is an Sb-type spiral galaxy. An estimated 20 percent of known galaxies have a lenticular form, 15 percent are elliptical and only about 5 percent are irregular.

Secondly, where are elliptical galaxies most likely to be found? Elliptical galaxies are preferentially found in galaxy clusters and in compact groups of galaxies. Unlike flat spiral galaxies with organization and structure, elliptical galaxies are more three-dimensional, without much structure, and their stars are in somewhat random orbits around the center.

Also know, why are elliptical galaxies most common?

One of the most common types are elliptical galaxies, named because they have an ellipsoidal (or egg) shape, and a smooth, almost featureless appearance. They're the result of many collisions between smaller galaxies, and all these collisions have destroyed the delicate spiral structure that we see in our own galaxy.

Is our galaxy spiral elliptical or irregular?

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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What does a spiral galaxy look like?

Most spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as the bulge. The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young, hot OB stars that inhabit them.

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What is a galaxy made of?

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Do elliptical galaxies have a lot of dust?

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