Cosmological Model Tests with JWST

The James Webb Space Telescope (JWST), which has recently become operational, is capable of detecting objects at record-breaking redshifts, z?15. This a crucial advance for observational cosmology, as these redshifts the differences between alternative cosmological models manifest themselves in most obvious way. In recent years, some hints have emerged indicating that Standard Cosmological Model could require correcting. One related to discovery remote galaxies whose correspond very young Universe (less than one billion years after Big Bang) but are similar nearby galaxies. issue such early do not enough time evolve into something late-Universe JWST observations high-redshift expected shed light on origin this issue. Here we provide results performing “angular diameter—redshift” test first observation data. We compare result with predictions standard ?CDM model and static models, including Zwicky’s “tired-light” model. latter currently assumed be ruled out by observations. challenge assumption show can natural straightforward way solving puzzle well-evolved better agreements high correcting evolution within framework. discuss several tests will important further research possibility revising expanding paradigm.