07. What do other galaxies look like? How are other galaxies different from ours? (A K2S Question)

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There are three kinds of galaxies and they all look different. Spiral galaxies, like ours, look like a pinwheel fan or water swirling down a drain. A barred galaxy is similar to a spiral except that it has a straight bar extending out from the core. The final type is the elliptical galaxy, which is kind of egg-shaped with no distinct arms. Galaxies differ from each other in two ways—shape and size. Some galaxies are much smaller than ours, while others are much larger. The smallest has about 30 million stars, while the biggest known galaxy has trillions of stars.

Answer provided by Jim Zebrowski


Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer


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