NASA scientists say the Earth-like planets are among one thousand two hundred thirty-five possible planets orbiting other stars that have been discovered so far.

VOA: special.2011.02.09

Why do I believe in certain planets too far away to be observed directly through a telescope?

我为什么会相信在望远镜正常观测范围外的,遥远之处存在行星

耶鲁公开课 - 死亡课程节选

That exists far from planets, far from everything.

它可以在远离行星,甚至,远离一切的地方存在

耶鲁公开课 - 基础物理课程节选