View James Webb Telescope Size Comparison Pictures. Overall size comparison of webb and hubble. Animation comparing the relative sizes of james webb's primary mirror to hubble's primary mirror.

Jwst Eoportal Directory Satellite Missions from earth.esa.int

The 18th and final primary mirror segment is installed on what will be the biggest and most powerful space telescope ever launched. Is it an add onto the existing hubble? More distant objects in the cosmos are more highly redshifted and, as a result, their light is pushed from ultraviolet and visible the james webb space telescope also has a much bigger mirror than hubble.

Needs to be unfolded afer launch:

Artist's rendering of the james webb space telescope. The spectacular james webb space telescope is bound next for the giant apollo testing chamber. This illustration compares various telescopes and how far back they are able to see. Accessible to the worldwide scientific community, it will offer scientists the opportunity to observe galaxy evolution, the formation of stars and planets.