What is Webb?

Webb is like a super powerful telescope that helps us see things in space that are really far away, kind of like how your eyes help you see something across the room, but Webb can see much farther.

Imagine you're looking at a firefly on a dark night. It's tiny and hard to see. Now imagine that firefly is actually super far away, like in another galaxy! That’s what Webb does: it helps us see tiny things that are very far away, even if they’re really faint.

Webb has a big, cold mirror that gathers light from space and sends it to its cameras. Think of it like a giant, super-sensitive flashlight detector, but instead of detecting flashlights, it detects the tiny glimmers of stars and planets. Because Webb is out in space, it doesn’t have Earth’s atmosphere getting in the way, so it can see even more clearly than telescopes on Earth.

Webb helps scientists learn about how the universe started and what's happening in distant parts of space, like watching a movie from the beginning!