Across
- 2. is the day when the Sun reaches its greatest distance north or south of the equator.
- 3. buildings with dome-shaped roofs that house professional telescopes.
- 6. Goal of this mission was to orbit a piloted spacecraft around Earth and bring it back safely.
- 8. Mapped Venus’s surface and returned data on the composition of Venus’s atmosphere.
- 9. arrangement of electromagnetic radiation.
- 14. first artificial satellite.
- 15. study of space and space objects.
- 16. the curved path an object follows around another object.
- 17. Orbiter mapped surface of Mars and Lander searched for life on Mars.
- 18. special engines that carry their own fuel.
- 19. sent back photos of jupiter-first probe to encounter an outer planet.
- 20. station have living quarters, work and exercise areas, and all the equipment and support systems need for humans to live and work in space.
- 21. an instrument that gathers information and sends it back to Earth.
- 23. occurs when the Sun is directly above Earth's equator.
Down
- 1. telescope used to study radio waves traveling through space.
- 4. any object that revolves around another object.
- 5. uses a curved mirror to direct light.
- 7. verified high temperatures in venus's atmosphere.
- 10. uses convex lenses, which are curved outward like the surface of a ball.
- 11. landed on moon's surface on July 20th, 1969
- 12. a reusable spacecraft that transports astronauts, satellites, and other materials to and from space.
- 13. stands for International Space Station.
- 22. a natural satellite to Earth.