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If you're watching this channel again, it means it's time for another astronomy talk. This time, we're going to learn about a planet with a surface temperature much higher than some stars. This time, we're going to introduce you to a planet called TOI-2109b. This planet is classified as a so-called "hot Jupiter." A "hot Jupiter" is a gas giant planet that is much closer to its star than Mercury is to the Sun. This is why these types of planets, firstly, always have the same face toward their star, and secondly, they are exposed to extremely high temperatures. Venus is the hottest planet in the solar system, but it's still pretty cool compared to the average hot Jupiter. The Mystery of the Hell Planet and the Fire Planet