Across
- 2. What powers the I.S.S?
- 4. Causes objects and people to feel weightless
- 7. Main source of energy for life on Earth
- 8. Type of space probe that passes by a planet or space obect
- 9. vehicle propelled by the exhaust made from burning fuel
- 13. A function of the EMU is allowing ________________ between astronauts and command centers
- 15. uncrewed vehicle that travels to and obtains info about objects in space
- 16. Organism that can be found in moss that survived extreme temps in space
- 17. The International Space Station is used for _______________
- 19. How astronauts combat muscle and bone loss in space
- 20. Only planet with liquid water
- 21. A challenge that humans face in space is extreme
- 22. The study of life in the universe
Down
- 1. All molecules that provide nourishment for life contain ___________
- 2. Human-made object placed in space to orbit Earth is an artificial ___________________
- 3. Compounds that make up the cells of living organisms
- 5. In this zone, planets are "just right" to support Life
- 6. A requirement for life
- 9. Earth's atmosphere absorbs ______________
- 10. Organisms that live in harsh conditions
- 11. surrounding Earth, maintains temps, absorbs radiation, burns up asteroids
- 12. warm spring that ejects a jet of liquid water or water vapor into the air
- 14. Planet that scientists believe is most likely to have liquid water outside of Earth
- 18. Allows astronauts and spacecraft to escape gravity