Arp 147 is a place in space where there are a lot of pretty things to look at. Scientists who study space call it a "star cluster," which means a group of stars that are together in the same spot.
Now imagine you have lots of friends and you all live in a big house together. When you want to talk to your friend in the next room, you can just call out their name and they'll hear you.
Well, stars are kind of like friends living in a big house. When they want to talk to each other, they use something called "light" instead of their voices. But sometimes, their light gets blocked by something, like a cloud or dust, and they can't talk to each other anymore.
That's where Arp 147 comes in. It's a place where there is a lot of dust, and the stars can't always see each other. But scientists who study space have special tools, like telescopes, that allow them to see through the dust and understand how the stars are talking to each other, even when they can't see each other with their own eyes.
So basically, Arp 147 is a star cluster where scientists study how stars talk to each other through the dust, and they use special tools to do it. It's a really neat place in space with lots of pretty things to see!