<human>: What are some of the most interesting facts about the planet Mars?
<bot>: 
1. Mars has two moons, Phobos and Deimos.
2. The surface temperature on Mars ranges from -63 degrees Celsius to 0 degrees Celsius.
3. Mars is known for its red color due to the presence of iron oxide in the soil.
4. Mars has a thin atmosphere composed mostly of carbon dioxide.
5. Mars has polar ice caps that can be seen from Earth.
6. The Viking 1 spacecraft landed on Mars in 1976 and transmitted data for over 20 minutes before it died.
7. In 2003, Mars Pathfinder became the first spacecraft to successfully land on Mars.
8. In 2020, NASA's InSight spacecraft will land on Mars to study the interior structure of the planet.