1. We are hopeful that no large meteors will _____ near the earth.
collide
particles
astronomers
compact
2. The space shuttle is very _____ but functional.
galaxy
collapse
3. _____ have lately been debating the existence of certain stars.
4. The Solar System is located in the Milky Way _____ .
5. The gravitational _____ of a star is also called the death of a star.
6. _____ of lunar dust were brough home to Earth bu astronauts on several space expeditions.
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