Science 7 Unit 6 Lesson 1:
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A light-year is the distance that light travels through space in 10 years.
FALSE
Celestial bodies can be classified based on their sizes. Which of the following is the smallest?
a planet
One way to compare the objects in space is by their relative sizes. Which of the following correctly lists the objects in space in order from largest to smallest?
universe, galaxy, star, planet
