Space Exploration - Topics 4-7

1. Planet discovered by Herschel's reflecting telescope in 1781
4. Type of electromagnetic radiation wave
5. Dark spots of the Sun with cooler temperatures
9. _________ radiation - Varying types of energy waves emitted by stars
14. Discovered the moons of Jupiter
15. High energy particles from the Sun that define the boundaries of the solar system
16. Type of electromagnetic radiation wave
19. Satellites not made by humans (the moon and the Earth)
22. Main component (element) of the Sun
24. Satellite that has travelled to the end of our solar system
26. Largest planet in our solar system
28. Shortest wave of electromagnetic radiation
29. The device or material that a rocket carries
30. The propulsion or force in a certain direction
31. The Sun is constantly going through ________ explosions

2. Newton "To every action there is an equal and opposite ________"
3. Rockets need a _____________ fuel to make them fly
6. Section of the rocket that drops off once its fuel is used up
7. Technology that electronically connects 2 or more telescopes to combine images
8. ______________ assist is a method of acceleration which enables a spacecraft to gain speed by using the gravity of a planet
10. Orbit of satellites placed about 36 000km above ground, and orbits the Earth once every 24 hours
11. Type of electromagnetic radiation wave
12. Longest wave of electromagnetic radiation
13. Smallest planet in our solar system
17. Large Hawaiian telescope that uses computers to combine images
18. Satellites made by humans (Hubble)
20. Satellite that has travelled to the end of our solar system
21. Attraction between objects
23. Satellites above Earth that can calculate your position on Earth within 30 meters
25. The ___________ the wavelength of light, the better the resolving power on radio telescopes
27. Tube that contains combustible material