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In just our noticeable universe we estimate there are over two trillion galaxies!

·        There are four main classes of galaxies: elliptical, spiral, barred spiral, and irregular.

·        These varieties of galaxies are additional divided into subcategories whereas at a similar time alternative varieties of galaxies exist supported their size and different unique options.

·        Spiral Galaxy the most common sort of galaxy found throughout the universe is that the spiral galaxy.

·        Around seventy seven per cent of the galaxies observed by man are spiral galaxies.

·        A good example of this kind is that the andromeda galaxy.

·        Around two-thirds of all spiral galaxies have a bar-like structure – so theyre classified as barred spiral galaxies.

·        Our galaxy, the milky way is an example of this kind of galaxy.

·        They have a flat, spinning disk with a central bulge nearby by spiral arms.

·        The spinning motion reaches speeds of up to 100 of kilometers/miles per second.

·        The bulge placed within the center is created up of older, dimmer stars, and is assumed to usually contain a supermassive black hole.

·        Elliptical Galaxies Elliptical galaxies have an elongated spherical shape and lack a nucleus or bulge at the middle.

·        Although theres no nucleus, the galaxy remains brighter within the center and becomes less bright toward the outer edges of the galaxy.

·        Their light is dominated by older ruddy stars.

·        They appear to conjointly lack spiral arms.

·        the stars, gases and alternative materials are unroll throughout an elliptical galaxy.

·        The rarest variety of galaxies is that the elliptical double-ringed galaxy.

·        PGC 1000714 is an example. Estimates recommend that around 0.1% of galaxies are this kind.

·        It is occasionally named the Hoag-type galaxy.

·        Elliptical galaxies are typically comprised of very old stars or stars with low mass.

·        They make up around 10-15% of galaxies within the Virgo Supercluster, a supercluster of that we are a part of.

·        They are very dim in comparison with the terribly bright spiral galaxies.

·        The largest galaxies are typically huge elliptical galaxies, containing a trillion or even more stars.

·        They span as much as 1 million light-years across – ten times as much because the milky way.

·        Curious enough, the littlest galaxies are the elliptical varieties. Irregular Galaxies Irregular galaxies havent any definite shape, although theyre in constant motion like all different galaxies.

·        They have a chaotic appearance as they don’t appear to possess a nuclear bulge or traces of spiral arms.

·        Some irregular galaxies were once spiral or elliptical galaxies however were misshapen by an uneven external force of gravity.

·         Irregular galaxies are usually commonly, and collectively they create up about a quarter of all the galaxies.

·        The oldest and farthest galaxy ever discovered is an irregular variety of galaxy known as GN-z11. its thirty two billion light-years / 9.8 billion parsecs faraway from United States.

·        its estimated that the galaxy formed simply around four hundred million years when the large Bang.

·        Lenticular Galaxies they seem like cosmic pancakes, fairly flat and featureless within the night sky.

·        These galaxies are often thought of because the “in between” of spiral and elliptical galaxies.

·        the majority of star formation has stopped however lenticular galaxies will still have significant amounts of dirt in them.

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