Which one among the following is not a Mars rover?

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Q: 100 (CAPF/2013)

Which one among the following is not a Mars rover?

question_subject: 

General Knowledge

question_exam: 

CAPF

stats: 

0,33,16,4,7,5,33

keywords: 

{'mars rover': [0, 0, 0, 1], 'apollo': [1, 0, 0, 1], 'curiosity': [0, 0, 0, 2], 'sojourner': [0, 0, 0, 1], 'opportunity': [1, 0, 0, 1]}

The question asks us to identify the option that is not a Mars rover.

Option 1: Sojourner - Sojourner is indeed a Mars rover. It was the first successful Mars rover that was part of the Mars Pathfinder mission in 1997. It operated on the surface of Mars for nearly three months.

Option 2: Opportunity - Opportunity is also a Mars rover. It was part of NASA`s Mars Exploration Rover mission, launched in 2003. It operated on the Martian surface for over 15 years until its last communication in 2018.

Option 3: Curiosity - Curiosity is another Mars rover. It was part of NASA`s Mars Science Laboratory mission, launched in 2011. Curiosity is currently still operational and has been exploring the surface of Mars since its successful landing in 2012.

Option 4: Apollo - Alert - correct answer should be Apollo is not a Mars rover. Apollo was the series of manned space missions conducted by NASA between 1961 and 1972 with the aim of landing astronauts on the moon. Hence, it has no connection to Mars exploration or Mars rovers.

Therefore, the correct answer is Option 4 - Apollo.