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We can probe this matter a little more in-depth. This introductory reference describes all the giant or Jovian planets, noting that only the two more massive ones, Jupiter and Saturn, are made primarily of hydrogen and helium. Uranus and Neptune, which did not have as much material to work with and did not become powerful enough to draw large proportions ...


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Will the Mars 2020 rover's sensitivity to methane be better than Curiosity's? No, Mars 2020 rover's sensitivity to atmospheric methane will be nonexistent. Curiosity's Sample Analysis at Mars or SAM with its quadrupole mass spectrometer (QMS), gas chromatograph (GC), and tunable laser spectrometer (TLS) will have no counterparts on the streamlined Mars 2020 ...


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