Skyhook balloon

A skyhook balloon is like a really big balloon that can stay in the sky for a really long time. It's attached to a rope that's tied to the ground so it doesn't float away. The balloon can go really high up in the sky and it helps scientists and researchers do things like look at the stars or study the weather. It's kind of like a big kite, but instead of flying it around, it just stays in one spot up in the sky. People use skyhook balloons because they are a lot cheaper than using a big airplane or satellite to do the same thing. And that's what a skyhook balloon is all about!