How do solar systems and galaxies differ?
Answer (2)
-- A galaxy is a collection of a huge number of stars ... possibly hundreds of billions of stars in a galaxy.
-- If a star has planets in orbit around it, then the star and its planets make up one solar system.
-- There could be hundreds of billions of solar systems in one galaxy.
Solar systems consist of a single star and its orbiting celestial bodies, while galaxies are extensive systems containing billions of stars, including many solar systems. A solar system is much smaller than a galaxy, which can be thousands of light years across. Galaxies have various structures, while solar systems are centered around one star.
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