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Q3: The Mars Express spacecraft was able to
Q14: Violent,eruptive events on the Sun that occur
Q20: Why has the greenhouse effect been much
Q23: What is the Drake equation and what
Q46: The most common forms of life on
Q60: You are interested in determining whether or
Q65: Europa,one of the Galilean satellites of Jupiter,has
Q91: From the center outward,the order of the
Q116: Despite the planet's close proximity to the
Q124: The huge volcano Olympus Mons on Mars