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10 terms

Space Probes to the Planets

Unit 5, story 5
STUDY
PLAY
atmosphere
the air that surrounds the earth
craters
holes in the ground shaped like bowls
incredible
amazing
probes
spacecraft carrying scientific recording instruments
spacecraft
a vehicle used for flight in outer space
asteroids
any of the thousands of small planetary bodies that revolve around the sun (chall.)
hazy
unclear; clouded (chall.)
meteorites
masses of stone or metal that have reached the earth from outer space (chall.)
meteoroids
fallen meteors (chall.)
solar system
the sun and all the planets and comets that revolve around it (chall.)