Across
- 3. series of space missions designed to send people to the Moon
- 4. -collects radio waves and some microwaves using an antenna that looks like a TV satellite dish
- 8. -study of life in the universe, including life on Earth and the possibility of extraterrestrial life dwarf planet -round body that orbits the Sun but is not massive enough to clear away other objects in its orbit
- 9. -something that can be chosen
- 11. life -originates outside Earth
Down
- 1. -anything related to the Moon
- 2. -uses a curved mirror to concentrate light from a distant object
- 5. -reusable spacecraft that transports people and materials to and from space
- 6. -vehicle designed to propel itself by ejecting exhaust gas from one end
- 7. spectrum -entire range of radiant energy carried by electromagnetic waves
- 10. -any small object that orbits a larger object space probe uncrewed spacecraft sent from Earth to explore objects in space