[CA_soon_gone]

Does this replace the Hubble telescope or do they combine to make the Webb Hubble Space whatever..

[Steely Tom]

Does this replace the Hubble telescope or do they combine to make the Webb Hubble Space whatever..

Webb is far more ambitious than Hubble. Incredible in many ways.

[Yossarian]

Does this replace the Hubble telescope (...) Ignoring the joke and using this as an excuse to clarify: The JWST is supposed to supplant Hubble, not replace it. Webb is just an infrared device, compared to the multispectral (infrared-optical-ultraviolet) device that Hubble is.

[KEVLAR]

No, they are completely different instruments.