Astronomers have been able to take the temperature of planets around other stars, first with telescopes in space but more recently with ground-based instruments, as my collaborators and I have done.
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美国国家航空航天局表示,天文学家使用地面望远镜搜寻在太阳系之外的行星,发现了上百个不同的天体。
According to NASA, "Astronomers using ground-based telescopes to hunt for planets outside our solar system, dubbed extrasolar planets, have nabbed more than a hundred alien worlds."