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Here are the readings. Now for the first part of your mission: Based on the following data, which planet do you think is Jupiter?


Planet A Planet B Planet C Planet D
Mass (kg) 5.69 x 1026 8.68 x 1025 1.90 x 1027 1.02 x 1026
Mean surface temperature (K) 88 59 120 (cloud tops) 48
Atmosphere 75% hydrogen
25% helium
with trace amounts of water, methane, and ammonia
83% hydrogen
15% helium
2% methane
90% hydrogen
10% helium
with trace amounts of water, methane, and ammonia
74% hydrogen
25% helium
1% methane
Satellites 18 15 16, including the four large Galilean moons—Io, Europa, Ganymede and Callisto 8




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