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This lesson plan helps parents teach how many stars are in the universe by exploring galaxy types, star estimates, telescope technology, and cosmic scale. With mini-tasks, quizzes, and critical thinking prompts, it’s perfect for ages 8–16 and supports home learning in a fun and structured way.
Astronomers estimate there are about 200 sextillion stars in the universe—more than grains of sand on Earth. But how do we know? This guide explores how galaxies, light, and deep space tools help scientists estimate the true number of stars. Learn why we can’t see them all and what this means for the size of the universe.