Alright, imagine a big science experiment gone wrong. That's what happened at Chernobyl. There was a big explosion at a power plant, and it let out lots of something called radiation. This radiation is like invisible tiny bullets that can make people very sick if they get hit by too many of them. Now, when the explosion happened, some people were in the area and they breathed in this radiation. It made them very, very sick and some of them got really hurt.
But that's not all. Some of the people who got sick were the ones who went to help stop the problem. They were the heroes, but they also got hurt because they got too close to the radiation. The radiation made some of their bodies not work so well and made them very sick too.
Some of the plants and animals around Chernobyl also got hurt by the radiation. It's like if you put a plant in too much sun and it withers, except it's because of something you can't see that hurt them.
So, yes, some people did die because of the radiation from the Chernobyl explosion. It was a very sad thing, and it teaches us how important it is to be careful with very powerful things like radiation. But it also shows us how brave people can be when they try to help others, even when it's dangerous.