"All about us & the universe we live in"--Container.
"Grade level 4-9"--Container.
Title from container.
Olympus Mons, the tallest and deepest volcano in our Solar System. Although Mars is about half the size of Earth, it takes nearly twice as long to orbit our Sun. NASA's 21st century inter-planetary robots landed on the once watery surface and sent back images and collected data. Coupled with Earth-bound complex telescopes, multi-disciplinary studies continue to enhance our knowledge of our closest neighbor.