2016
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mercury
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Venus
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Jupiter
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Mars
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Detailed explanation-1: -When NASA’s Curiosity rover found manganese oxide in Martian rocks in 2016, many planetary scientists rejoiced, believing that the mineral’s presence was a significant hint of past concentrations of oxygen in the planet’s atmosphere.
Detailed explanation-2: -Oxygen is Rare on Mars There is less than 1% of air on Mars as there is on Earth, and carbon dioxide makes up about 96% of it on Mars. Oxygen is only 0.13%, compared to 21% in Earth’s atmosphere. If we want oxygen on Mars, we either have to bring it along, or make it ourselves.
Detailed explanation-3: -There is only one planet where gaseous oxygen is found: Earth! And the only reason that Earth has oxygen is because Earth has plants that do photosynthesis. There is no other natural process that we know of that will put significant amounts of oxygen into a planet’s atmosphere.
Detailed explanation-4: -Io, Ganymede, and Europa all have oxygen in their atmospheres, and roaming could be the cause. Io is a volcanic place – the most volcanic world in the Solar System – so life is ruled out there. Ganymede and Europa have subsurface oceans, so they could potentially harbour life.