Catatumbo lightning is a really cool and fancy name for something that happens in the sky. It's a type of lightning that happens in a place called Lake Maracaibo in Venezuela.
You know how sometimes you see flashes of light in the sky when it's dark outside and there's a thunderstorm? That's lightning! Well, in Lake Maracaibo, they have a special kind of lightning that happens all the time.
It's called Catatumbo lightning because it happens in an area called the Catatumbo River. This lightning is really special because it happens almost every night!
When the air gets really hot, it rises up into the sky. This makes the sky have different layers of hot and cold air. The hot air goes up, and the cold air goes down. When they rub against each other, it creates energy, and that's what makes the lightning.
So, the Catatumbo lightning is caused by a lot of hot air and cold air rubbing together and making energy. It's really cool to see, but people who live there might get a little scared because they hear lots of noises and see lots of light at night.
But it's okay because scientists study the Catatumbo lightning to learn more about how it happens and how we can use that energy to make things work.