Astronomy A. light-year B. meteoroids C. planets D. stars The distance a beam of light travels in one year. Large globes of intensely heated gas, generating their own light. Normally very small solid objects that traverse space and usually are burned up before reaching 57. 58. 59. earth. Large solid, approximately spherical masses, the most famous of which is earth, which revolve 60. around our sun. Ecology, Pollution, and Energy A. biodegradablo

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