>>11913291JWST was built for high redshift galaxies like GN z11, it will see considerably further and reveal much more detail. Hubble's limitation was that it couldn't see very far into the infrared, so galaxies like GN z11 were at it's limit. It could also only find these galaxies and tell roughly how far away they are. JWST will see at longer wavelengths where it can detect even more distant galaxies and measure their properties like how massive the galaxy is and when it formed. The revolution will come with spectroscopy, something HST was terrible at. JWST has a real multi-object spectrograph. It will measure precise distances which will allow followup from ALMA. JWST imaging will also find the most interesting objects for the coming Extremely Large Telescopes to resolve in detail.
JWST will be able to search for bio-signatures in the atmospheres of exoplanets using transit spectroscopy, but finding life is probably unlikely. Hubble was very limited in doing this because it could only access a small range of the infrared, most molecules were unaccessible. JWST will do much better because of the wavelength coverage.
It has an extremely strong science case, even now.
>>11913331You have no idea what you're talking about.
