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Q6: What conditions are required for a solar
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Q14: From Kepler's third law, an asteroid with
Q37: Which of the following is not one
Q38: Thermal radiation is defined as _.<br>A) radiation
Q55: The astronauts feel weightless in the International
Q58: The orbits of many extrasolar planets detected
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Q127: If the Earth's rotation axis was tilted
Q133: Planets detected via the Doppler technique have