The early reionization of the intergalactic medium, which is favored from the WMAP temperature-polarization cross-correlations, contests the validity of the standard scenario of structure formation in the cold dark matter cosmogony. It is difficult to achieve early enough star formation without rather extreme assumptions such as very high escape fraction of ionizing photons from proto-galaxies ...

In the program article ―The Architectures of Theories‖ (1893), C. S. Peirce presented his trichotomies within psychology, biology, physics and philosophy, and in terms of these trichotomies, it could easily be predicted, according to Peirce, what kind of metaphysics it would be appropriate to construct, a cosmogonic philosophy. But, other than presenting his very brief sketch of a thoroughgoing...

Yaratılış anlatıları, içerisinde asli bir aporia, açmaz barındırır: yaratılan şeyler, yani âlem, yerde mi yaratılmıştır, yoksa mekân da şeyler arasında mıdır? Doğrusu, yaratılış aynı zamanda kurgusudur: Yaratılışın hangi aşamalardan oluştuğu kadar “nerede” gerçekleştiği de hikâye edilir; zira her mit, anlatı, “belirli yerde” meydana gelmek zorundadır. Gök, yer, karalar ve denizler, dağlar, oval...

The combination of Cosmic Microwave Background (CMB) anisotropy measurements and Large-Scale Structure observations has caused dissatisfaction with the standard Cold Dark Matter (sCDM) cosmogony, leading some to advocate a “tilt” of the primordial power spectrum away from scale-invariant (n = 1) to n = 0.8− 0.9. 1 Other CDM cosmogonies have not commonly been tilted but their agreement with the ...

In currently popular cosmological scenarios – all variants of the cold dark matter (CDM) cosmogony – some time beyond a redshift of 15, stars within the numerous small halos that condense with virial temperatures ∼ 10 K created the first heavy elements; these protogalactic systems, together perhaps with an early population of mini-quasars, generated the ultraviolet radiation and mechanical ener...