Question

TPO 22 听力Lecture第2篇 第4题Why does the professor mention the solar wind?为什么答案是A?

Why does the professor mention the solar wind?A. To explain a way the Sun is losing mass.B. To point out that it was less intense billions of years ago.C. To suggest a reason for early climate differences between Earth and Mars.D. To explain the importance of solving the faint-young-Sun paradox.

Answer 1

Professor: Well, if the young Sun was more massive than today’s, it would have been hotter and brighter than the model predicts. But this would mean that it had lost mass over the course of four billion years. 教授说：如果，当时的太阳的质量比现在大的多，那它就有可能比模型中显示得更亮，更热。但是它是怎样丧失质量的呢？教授后来解释说 “Professor: Actually, the Sun is constantly losing mass through the solar wind, a stream of charged particles constantly blowing off the Sun.” 教授说因为太阳风，太阳一直都在损失质量。所以教授提到太阳风的目的就是为了给出一种损失质量的方式。所以 A 选项正确。