11 July 2022

First Webb Deep Field image

This first JWST deep field image shows very clearly the phenomenon of gravitational lensing. When I took Astronomy in college years ago this was a theoretical but barely demonstrable phenomenon... the way relativistic effects cause massive objects in the foreground to bend the light from more distant objects, stretching them out and typically splitting the images. The concentric curves of double images of distant galaxies in this image are now typical in the these wonderful images of galaxies, some so far away the light has been traveling towards our location in space for most of the age of the universe. 

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