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The star Vega has a higher surface temperature than the Sun;therefore (with IR = infrared and UV = ultraviolet) ,
Q15: The center of our Milky Way Galaxy
Q18: When comparing the internal structure of Mars
Q30: The chemical composition of the planets is
Q35: Which one of the following statements is
Q39: What effect does an increase in pressure
Q46: How was the cosmic background radiation discovered?
Q75: The speed of light is 3 ×
Q84: When an object is moving away from
Q95: Astronomers have found the existence of spiral
Q103: Planets do not fall into the Sun