2. Size Smaller than Earth 8 Mars would fit inside the Earth! 3. Days and Years One Earth day is 23 hrs and 56 min One Earth year is 365 days 4. Days and Years One martian day is 24 hours and 37 minutes One martian year is 686 earth days, almost two Earth years 5. Seasons Like Earth, Mars tilts This tilt causes seasons 6. 3500 km (2200 7. Deimos 39 km (24 miles)Phobos 69 km (43 8. Mars is the fourth planet from the Sun 9. Mars is Farther Away Earth is 93 million miles from the Sun Mars is 140 million miles from the Sun 10. Mars is Cold High = 40F Low = -195F 11. Earth is Warm High = 136 F Low = -128 F 12. Atmosphere Very thin atmosphere Mainly carbon dioxide No oxygen 13. Atmosphere Thick Mainly nitrogen and oxygen Small amounts of carbon dioxide 14. Mars is Dry No lakes, rivers, or oceans 15. Earth is Wet Earth has oceans, lakes and rivers.