The Earth is not perfectly spherical, Mercury is the hottest planet, and Jupiter is the largest planet in the Solar System. These simple facts are known even to those with no real knowledge about astronomy. But there are billions of planets in the Universe and some of them are really amazing! For example, there's a planet where night never ends. And it’s not your regular night with stars shining in the beautiful skies — here, it’s pitch dark and scorching hot!

Have you ever heard about a planet that is so close to its sun that half the planet’s surface is a literal ocean of molten lava? The other half is in eternal darkness because it never sees the sun — the planet is always turned to its star with one side! And between the scorching and the dark, there’s the twilight zone — a thin strip of gloomy nothingness.

Learn more about your ad choices. Visit megaphone.fm/adchoices