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Season 5 Episode 33 | 14m 3s
You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. The surprisingly vicious debate over the planetary status of Pluto has given us a fascinating glimpse into what a scientific definition really is. And perhaps the word planet is too vague to be used as a scientific definition at all.
Aired: 11/05/19
Video has closed captioning.
Why We Might Be Alone in the Universe
Why does it appear, that humanity is the lone intelligence in the universe?
The universe is big, but it’s peanuts compared to the eternally inflating multiverse
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You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast.
How To Become an Astrophysicist
Are you thinking about becoming (or ever just wondered how one becomes) an Astrophysicist?
What Happened Before the Big Bang?
We actually have a pretty good idea of what might have happened before the Big Bang.
