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Stay turned for our new exciting Saturday episode where Peter, our host, will do a real life What If challenge! One of the lucky viewers of that episode will get a chance to meet the What If team.

This blue, marble-like planet looks just like Earth. But only five seconds on this hostile death-orb would kill you. Welcome to HD 189733b. This planet is enormous. Even larger than Jupiter. And to keep comparing it to the largest planet in our Solar System, it's also entirely made of gas. That's why scientists classify HD 189733b as a hot Jupiter.

00:00 The Most Terrifying Planet That Looks Like Earth
01:54 Extreme Temperatures
03:04 Powerful Winds
04:23 OGLE-TR-56B
05:30 KELT-9b
07:58 What If In Real Life

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