Space Exploration

7. all of the wavelengths and frequencies of electromagnetic radiation
9. the first space shuttle launched on April 12, 1981
10. these waves has the longest-wavelength and lowest-frequency
11. global positioning system
13. any human-made object placed in orbit around a body in space
15. a satellite that is about 35,700 km above the equator and takes 24 hours to orbit Earth once
16. a telescope that uses a lens to collect light
17. distance between two adjacent crests or troughs of a wave
18. these waves are sometimes called "heat radiation"
19. large rockets were used in this space program to go to the moon between 1969 and 1972

1. a telescope that uses a mirror to collect light
2. observations of Earth from space made by satellites
3. a measure of the number of waves passing a point per second
4. the process of setting a rocket or spacecraft in motion
5. data from satellites are combined to get this one type of image
6. an uncrewed vehicle that carries scientific instruments to distant objects in space
7. energy traveling as electromagnetic waves
8. national aeronautics and space administration
12. a product that uses NASA technology and that benefits the public
14. a continuous range of a single feature, such as wavelength