1. The solar system prepared by Omar Ahmed& Mohamed Issam & Omar Osams class;4/ B

2. sun the sun is meduim size star any star has about { 75%}hydrogen and {24%} helium

3. jupitor jupitir is the biggest planet

4. mercury mercury is nearest planet to the sun

5. mars mars is the red planet

6. pluto pluto is the smallest planet scientists do not classify pluto as a planet because he is too small and his volume is less than one fifth of the earth

7. moon 1468 قطرة km 5150 km 1528 1071 km km km km iapetus titan rhea dione 1126 tethys enceladus 505 mimas 397 km saturn

8. earth the earth take 24 hours to complete 1 day and take one year to complete the four season and it is the meduim sized planet the earth is the only planet that have life the sun is the nearest star to earth

9. venus is the most beauteful planet venus

10. the cold planet uranus

11. the blue planet neptune

12. facts about the moon equatorial diameter:3476 km mass:7 ×1022 diameter ratio(moon|earth);o.27 average(earth-moon)distance;384 ,000 km mass ratio{moon-earth}:o.012