2. Mars By : Nine

3. Main ideas Mars is the forth rockiest planet. Scientist have great interest in it. It’s called the Martian Surface.

4. The forth planet Mars is farther than the Earth and Sun, this means it gets less sunlight. Its orbit is not very circular. It’s very cold in the Martian surface though.

5. The surface It has enormous volcanoes. One of them is three times taller than Mount Everest. Erosion also happens there.

6. Exploring Mars They test its strength by striking the surface and pushing its soil. NASA is planning on Mars mission in the future too. The planet is divided in half.