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During the time that a comet passes through the inner solar system, the comet can appear quite bright because
Q18: If the Sun-Earth separation was 10 AU
Q30: According to present understanding, a nova is
Q31: Which of the following lists the planets
Q39: Where would a brown dwarf be located
Q47: What is "ice geology"? Give an example
Q53: When a comet passes near the Sun,
Q63: What is a planetary nebula?<br>A) a disk
Q69: What is Pluto's moon Charon thought to
Q119: If Earth had no atmosphere, its temperature
Q130: The main source of energy for a