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The most distant stars we can measure stellar parallax for are approximately
Q12: Which one is used by a main-sequence
Q16: How can we determine an asteroid's reflectivity?<br>A)by
Q28: The composition of a planet's atmosphere be
Q28: It is very cold,but otherwise quite comfortable.You
Q29: The total mass of the Kuiper belt
Q32: Why do astronomers believe that Triton is
Q50: Which star is emitting the most ultraviolet
Q53: Which of the following discoveries,if they existed,would
Q53: Which of the following statements about novae
Q64: Interstellar dust consists mostly of<br>A)ozone "smog."<br>B)microscopic particles