Unit 6 Passage 3

1. __________ is the planet where humans live.
4. The project was successful because of __________ between different teams.
5. __________ helps humans learn more about planets and stars.
8. The two countries planned a __________ mission together.
9. Some scientists believe __________ on asteroids could provide materials for Earth.
12. __________ was the first human to travel into space.
13. Scientists hope humans may one day visit __________.
15. Many __________ worked together on space missions.
18. New technology can __________ the speed of space travel.
20. Space seems __________ because there is still so much we don’t know.
21. Astronauts need __________ to train and succeed.
22. Landing on the Moon was one of the biggest __________ in history.
23. Stars, planets, and galaxies exist in __________.
24. New discoveries help __________ move forward.

2. An __________ is a man-made object that orbits Earth.
3. Yuri Gagarin was from the __________.
5. __________ was the first satellite sent into space.
6. The competition between countries during the Space Race was __________.
7. Scientists study __________ that are rocky objects floating through space.
10. Space exploration helps humans learn about the __________.
11. Human __________ pushes people to explore the unknown.
14. In the future, __________ may allow regular people to travel into space.
16. The Space Race happened during the __________ between powerful countries.
17. Astronauts landed on the __________ in 1969.
19. Space discoveries affect all of __________, not just one country.