Q. How will I recognize a real interstellar dust particle track if I see one?
Q. How will I recognize a real interstellar dust particle track if I see one?
问：假如我看到了一个如何才能认出那就是星际尘埃的踪迹呢？
Q. How will I recognize a real interstellar dust particle track if I see one?
问：假如我看到了一个如何才能认出那就是星际尘埃的踪迹呢？