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Q2: In science, a broad idea that has
Q18: What is the purpose of interferometry?<br>A)It allows
Q34: The Kepler mission has searched for Earth-
Q48: We have sent several spacecraft on trajectories
Q48: Why can't current theories describe what happened
Q64: A gravitational lens occurs when<br>A)a massive object
Q87: Which event in the history of the
Q94: (From a science quiz that appeared in
Q116: Each choice below describes how a few
Q123: Lunar eclipses can occur only during a