Jupiter radius

Jupiter is a really big planet, just like a balloon but much, much bigger! Its size is measured in units called "radius." That's a fancy way of saying how long it would take to walk all the way around the planet. Imagine you're walking around a giant beach ball - that's kind of what it's like! Jupiter's radius is about 43,440 miles (69,911 kilometers), which is about 11 times longer than the radius of Earth. So, Jupiter is really, really big compared to our Earth!