Can James Webb really see the past?

The James Webb Space Telescope (JWST) made history on July 11 when it unveiled its first image, 

a gem-filled picture dubbed the "deepest picture of the universe ever taken."

The James Webb Space Telescope can observe distant stars and galaxies as they appeared 13.5 billion years ago

 not long after the beginning of the universe as we know it, looking farther back in time

than any other telescope. In addition to looking farther across space than any observatory before it

 the James Webb Space Telescope has another trick up its mirrors.

How is that even possible? How is it that a machine may travel "back in time"? It is simply a property of light; it is not magic.

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