Project- 2

2. The planet having atmospheric thickness of about 800km to 1000km
6. A 400km thick bright layer around the sun
9. The planet having more than 60 moons
10. comet The comet that comes close to the sun every 76 years
12. The first space shuttle launched on 12th April 1981; followed by Challenger,Discovery,Atlantis
14. Kepler The man who found the 'Laws Of Planetary Motions'?
16. Celestial self-luminous objects that produce energy on their own in the form of radiation
17. The planet with its poles covered with dry ice
18. The first satellite launched by India in the year 1980
19. First imaging X-ray telescope later named as 'Chandra'
20. The planet discovered by William Harshall in 1781

1. The largest and the first ever discovered asteroid
3. The rocks failed to form a planet during the formation of the solar system
4. The planet that forms a binary system with its moon and revolves around their common center mass
5. Substances that keep on coming to the earth with different sizes
7. Copernicus model also known as 'Sun-centered'
8. The planet that spins opposite to other planets
11. The planet whose largest moons Titan
13. The planet having 427C during day and -173C during night
15. The core region of this planet is made up of ice and silicate rocks