Across
- 3. A smaller object that orbits a larger object
- 8. There are eight planets in our
- 10. UV waves are shorter than radio waves. This means they have a higher
- 11. Type of optical telescope that uses lens
- 12. Electromagnetic waves with the longest wavelengths
Down
- 1. The height of a wave is called
- 2. Abbreviation for the space station that orbits Earth
- 4. Type of optical telescope that uses mirrors
- 5. Object in our sky that reflects the Sun's light
- 6. The Voyager was launched 44 years ago and is still traveling in space. It is a ____ space probe.
- 7. The hottest stars emit _____ rays
- 9. Our galaxy is called the
- 11. List the first letter of each type of wave on the electromagnetic spectrum, in order of waves with the longest wavelengths to the shortest.