what is galaxy? name different types of galaxies according to their shape and size
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definition:-
a galaxy is basically a large group of starts gas and dust held together by gravity this is the simplest definition of galaxy
shape and size:-
therethere are four types of galaxies in our universe we start out with our own galaxy The Milky way galaxy is a buried spiral galaxy which means that it has the shape of a disk with a bulge sticking out of it and a bar .
the second type of galaxy in our universe is called spiral galaxy spiral galaxies are the most common out of the four and they just look like a spiral saved but with no bulge in the middle.
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A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle.
Galaxies are classified by shape. There are three general types: elliptical, spiral, and irregular. Perhaps the most familiar kind of galaxy are spiral galaxies. They have a distinctive shape with spiral arms in a relatively flat disk and a central "bulge".
Explanation:
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