1. Third Rock from the Sun SUNSUN Why is Earth called the third rock from the Sun?

2. The Earth is made of rock…

3. From the tallest mountains...

4. To the ocean floor...

5. From luscious waterfalls...

6. To muddy ravines...

7. From steep canyons...

8. To shallow riverbeds...

9. From rugged plateaus...

10. To sandy beaches..

11. From lava covered volcanoes...

12. To rich green valleys...

13. From rocky beaches...

14. To limestone caves...

15. Rocks come in all shapes...

16. And sizes...

17. The Earth is made of rock

18. Credits All photographs from Jupiter images unlimited. License granted.