How long is stellar year on Mars?

687 Earth days

423 Earth days

183 Earth days

121 Earth days

The Martian year is almost twice longer than Earth's year.

Kevin Gill wikipedia → Mars

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Answers by country

Unknown

75%

16%

the United States

50%

36%

115

Austria

47%

38%

India

37%

34%

16%

10%

190

Switzerland

37%

45%

12%

Pakistan

33%

Germany

30%

41%

18%

211

Poland

29%

17%

22%

3410

the United Kingdom

24%

50%

20%

Australia

24%

56%

16%

Canada

18%

63%

18%

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