Space Physics

2. The astronomer which found that the galaxies are become further away from each other
4. The imaginary line that cross the Earth from North Pole to South Pole
8. The movement of Earth which causes day and night
10. The movement of Earth orbiting the Sun
11. Imaginary line which divide Earth into Northern hemisphere and Southern hemisphere
13. Happens around July in Northern Hemisphere because of the hemisphere is near to the Sun
14. Take the initial of the planet, arranged from the nearest to the Sun and combine them
17. The astronomer who invented telescope and found that Earth is orbiting the Sun
18. The rocks found between Mars and Jupiter
19. Universe is always ..., starting from a dot when Big Bang to nowadays size
20. Made from ice and dust

1. When rock from outer space successfully pass the atmosphere and hit the Earth
3. The theory which explains that the sun is the center of solar system
5. Contains sun, planets and satellites around it
6. Unmanned spacecraft used to observe outer space and gather data
7. Name of our galaxy
9. The instrument used to observe outer space object
12. The position of Earth in the space which is not upright
15. The natural satellite of Earth
16. The collections of solar systems