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This is CBS. I am the world. I'm John Batcher. Hotel Mars episode N. A comet in the sky.

Our forebears believe that comets were associated with the birth of kings, the death of kings

or catastrophe. And they could prove it each time. Here we are in the 21st century. And

comets are associated with learning more and more about the makeup of our solar system,

the primary elements. Comets appear to be part of our world and then yet they pass us

by. What can we learn from them? David Livingston, my colleague in co-host, co-pilot of hotel

Mars. And we invite the president of Earthrise Institute, former adjunct professor at American

Public University System, Alan Hale. Alan is our guide on comets. He is one Hale part

of the very famous Hale Bob comet. But this comet we're talking about is in the sky

right now. It's called Comet ZTF. Alan, a very good evening to you. Thank you for this.

Before we get to ZTF and its lore, one is a comet. How is it distinguished from an asteroid?

We keep sending probes to asteroids and we're led to believe that comets are special. How

so. Good evening to you. Actually, the difference between comets and asteroid

is very interesting question. It's no easy answer. But that starts to get a little complex.

...