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How can astronomers be confident that the larger exoplanets discovered are not simply browndwarfs?
Q1: Interstellar absorption lines are narrow primarily because:<br>A)there
Q1: On Bode's advice, Herschel named his newly
Q2: Because the poles of Uranus spend 42
Q22: The Sun's magnetic field has been traced
Q22: Pluto was discovered in:<br>A)ancient times.<br>B)1789.<br>C)1859.<br>D)1930.<br>E)1992.
Q34: Saturn is almost the same size as
Q44: If a star is found by spectroscopic
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Q72: Since brown dwarfs cannot ignite hydrogen fusion,
Q80: Why are infrared observations useful when observing