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Organic compounds have not been found on Mars, as of 2016.
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Q5: Neptune has a highly tilted rotation axis,
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Q31: All the Galilean moons are in synchronous
Q38: Seismic S-waves can travel through Earth's liquid
Q39: Why is Titan considered so interesting?
Q50: A successful theory of the formation of
Q57: The spacecraft which first revealed the possibility
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Q101: Pluto's Sputnik Planum might be only _