TEACHER:
Are there any questions before we begin? … No? … This afternoon I’m going to introduce you to three mysterious phenomena that have been puzzling astronomers since the early twentieth century—phenomenon which promise to tell us a good deal about the origins of our universe and the nature of space and time. I’m talking about black holes, white holes, and wormholes. Are you familiar with these? I’m sure most of you have heard of these things—maybe through movies—but if you’re like most people, you probably really don’t understand them very well right? What I’d like to talk about today—in pretty simple terms—is what these things are and what evidence we have that they exist.
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