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2) 1. astronomer 2. Astronaut
3. Gravity 4. Planets, solar system 5. Meteor 6. Space colony
3) 1. telescope 2. Spacesuits
3. Planets, moons and stars 4. Planetarium 5. spaceship
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2) 1.follow 2. Repair 3. Discover 4. Plan 5. Increase
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6)
1. you can see better at night and people stay out late.
2. from a spaceship flying close to Earth.
3. it turns.
4. because its path is elliptical.
7) 1. Believe 2. Crimes 3. Shines
4. Cause 5. Disasters
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