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