TY - CHAP A1 - Ahmet M. Öztaş A2 - Michael L. Smith ED1 - Antonio Alfonso-Faus Y1 - 2011-09-09 PY - 2011 T1 - A Polytropic Solution of the Expanding Universe – Constraining Relativistic and Non-Relativistic Matter Densities Using Astronomical Results N2 - This book presents some aspects of the cosmological scientific odyssey that started last century. The chapters vary with different particular works, giving a versatile picture. It is the result of the work of many scientists in the field of cosmology, in accordance with their expertise and particular interests. Is a collection of different research papers produced by important scientists in the field of cosmology. A sample of the great deal of efforts made by the scientific community, trying to understand our universe. And it has many challenging subjects, like the possible doomsday to be confirmed by the next decade of experimentation. May be we are now half way in the life of the universe. Many more challenging subjects are not present here: they will be the result of further future work. Among them, we have the possibility of cyclic universes, and the evidence for the existence of a previous universe. BT - Aspects of Today's Cosmology SP - Ch. 15 UR - https://doi.org/10.5772/24774 DO - 10.5772/24774 SN - PB - IntechOpen CY - Rijeka Y2 - 2022-01-21 ER -