Okay kiddo, today we're going to talk about something really cool in space called PSR J0737-3039.
It's basically a really special kind of star called a pulsar. This pulsar is actually two pulsars that are orbiting around each other very quickly, kind of like two dancers moving together.
But here's the really amazing part: these pulsars are spinning so fast that they create something called gravitational waves. Imagine throwing a rock into a pond and watching the ripples spread out - that's kind of what happens with gravitational waves, but in space.
Scientists have been studying PSR J0737-3039 to learn more about these gravitational waves and how they affect the pulsars. They've found that the orbit of the pulsars is actually getting smaller over time because of the waves spreading out.
It's really fascinating stuff and helps us learn more about the universe we live in. Pretty cool, huh?