Why Is the Closest Planet to the Sun So Cold?

We found something unexpected inside Mercury... Mercury makes no sense. It's the closest planet to the Sun, yet parts of its surface are freezing cold. It's so close to Earth, yet almost impossible to reach. And while its surface looks completely dead, its interior tells a very different story. In this video, we'll explore what the BepiColombo probe has discovered on Mercury's surface so far, and the unexpected surprises found hiding deep below.

Courtesy of Astrum on YouTube. Watch on YouTube ↗

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