Despite the larger mirror for JWST compare to Hubble, it is not picking up all the galaxies in the sky. As the value of Z is larger and larger, some medium or old (red) galaxies are slipping away (the medium size galaxy is not bright enough and old galaxy like elliptical red one is too red - the light due to cosmological reddening is slipping away from the range of JWST). In total this will create the strange feeling that number of galaxies is smaller and smaller as Z becomes higher and higher - which would support the Big Bang idea (originally it was smaller amount of galaxies because they were not formed). Interestingly the same phenomenon will work even in the case of Static Universe with uniform distribution of galaxies - some galaxies are so old and red that they will emit mainly red light - easily seen at Z<1 but shifting to far infrared and becoming mainly invisible for higher Z (they still have blue stars, of course, but too small number of them and thus becomes below the light sensitivity of the sensor). The small galaxy placed far away will merely deliver too small number of photons to be visible (the signal to noise ratio is below what is possible for the sensor even with 6.5 m mirror of JWST). However, there is an interesting way to evaluate the true number of galaxies at certain Z (not very high) for the case of Static Universe using supernovae at high Z.
Supernova is not only a compact object [1,2] but also ultrabright object - easily outshine the whole galaxy. It means that in the JWST observations sometimes the "lonely" supernova is visible [3]
As it is clearly seen on three photos separated by long times (Epoch 1 is July 2022, Epoch 2 is January 2023 and Epoch 3 is July 2023) the hostless supernova type 1A with Z=1.64 is clearly visible. The angular size of it is easy to measure using last square of 2.4"x2.4" (according to [3]) as being around 1.2-1.6*10exp(-6) radian with resolution of JWST equal to 3*10exp(-7) radian - many times larger than it should be because of so small actual size. This is one more confirmation of the light scattering being present (and thus making Big Bang theory obsolete, see [1,2,4] and in addition the confirmation that there are much more galaxies are present at high Z than JWST is actually see.
Indeed since the supernova type 1A is the result of the interaction of two stars in binary system what is only possible if there is a lot of other stars is nearby (galaxy is present). By no means may supernova appear from nowhere. The galaxy is not seen because the JWST has limitations and can not see weak galaxies or too old galaxies. However, since supernova outshine the whole galaxy and in addition is small object (no drop in brightness is expected due to the resolved size) it will be visible even without the host galaxy (exactly like in [3] was observed). If the Static Universe is assumed, up to certain Z the number of supernovae observed as a function of Z must actually increase because the further JWST is see, the more galaxies are visible. That is only valid for JWST because Earth bound telescope will see mainly supernovae at Z<1 because of light scattering in atmosphere and smaller mirror size.
If I place all Z of supernovae observed by JWST (some data from [3], some from previous publications) on the same plot the distribution will be looking like this:
It seems that aside from first bin for very small z (outlier) the number of supernovae detected is indeed grow as a function of Z and then drops down. Of course for very high Z the blurring of supernova due to light scattering (the same phenomenon which is responsible for red shift of light as it propagates, see this blog for more details [4]) the supernovae will not be observed either (similar to high Z supernovae not observed by small telescope or Earth based telescope). From point of view of Static Universe the dependence would look like similar to what is really observed. From point of view of Big Bang it is necessary to have build up of Universe to observe the supernovae (as galaxies are growing the number of supernovae is increasing) so it would be clearly more of them at Z<1 compare to other Z (at much smaller Z the number of galaxies at reach is however dropping because of 1/r^2 limitation of the area searched. Clearly the number of supernovae at Z around 1 must be at maximum (the Universe is already old enough to create many of them and the volume observed is also very high). What is observed contradicts Big Bang idea in many ways. At Z~2.5 the Universe total volume is small (3.5 times smaller compare to modern one) and galaxies are very young (no time for supernovae to be created).
Conclusion.
Some limitations of JWST with respect to number of galaxies being observed as function of z may be overcame by using the count of supernovae instead - they are bright compact and outshine the host galaxy easily thus being observed where observation of galaxy failed.
References.
3.Haojing Yan, Bangjheng Sun, Jhiyuan Ma, Christopher N.A. Willmer at all // The Astrophysical Journal, 998:115, 2026
or on Arxiv arxiv.org/pdf/2506.12175v2
https://arxiv.org/pdf/2506.12175v2
4.Tipikin: The quest for new physics. An experimentalist approach. Vol.3 The new cosmology.
5.Type Ia supernova - Wikipedia
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