  The claim by Gurzadyan et al. that the cosmological sky is a weakly random
one where "the random perturbation is a minor component of mostly regular
signal" has given rise to a series of useful exchanges. The possibility that
the Cosmic Microwave Background radiation (CMB) data present trends in this
direction would have strong implications for unconventional cosmologies.
Similarly, data on ultra-high energy cosmic rays may contain signatures from
new Physics generated beyond the Planck scale. It therefore seems legitimate,
from a phenomenological point of view, to consider pre-Big Bang cosmologies as
well as patterns where standard particles would not be the ultimate
constituents of matter and the presently admitted principles of Physics would
not necessarily be the fundamental ones. We discuss here prospects for some
noncyclic, nonstandard cosmologies.
