James Webb Space Telescope is the world's largest space telescope, and its mission is to study the distant universe. It was designed to observe the farthest stars and galaxies, which are too far away for other telescopes to observe.

With its wide-field camera, it can see almost all the stars in the sky, and it can also see the light from distant objects, such as galaxies and planets.

It has an extremely small and sharp lens, which makes it perfect for seeing the most distant objects. Its lens is so small that it can fit inside the Hubble Space Telescope, which means it can see much more of the distant objects.