Cosmic Microwave Background Radiation (CMB), the Observable and Non-Observable Universes, and Their Respective Distances

Soumendra Nath Thakur* Priyanka Samal1 Onwuka Frederick2

Guided by the monumental Big Bang theory, this research paper embarks on a captivating exploration of cosmic vistas, delving into the enigmatic origins of the universe, the enigmatic cosmic microwave background radiation (CMBR), and the intricate interplay between observable and non- observable universes. Intricately woven into this cosmic fabric are the pioneering observations of the Cosmic Background Explorer (COBE), the Wilkinson Microwave Anisotropy Probe (WMAP), and the Planck satellite. These scientific sentinels have charted the CMBR's temperature fluctuations, offering windows into the universe's earliest epochs. COBE's revelation of temperature variations in 1992 solidified the Big Bang theory. WMAP, launched in 2001, delved deeper, unraveling the CMBR's anisotropies and refining cosmic parameter measurements. The Planck satellite, soaring into space in 2009, etched precision onto the cosmic canvas, encapsulating the universe's age, composition, andevolutionary trajectory.This narrative unfolds the epic tale of emergence from a minuscule singularity and the subsequent grand cosmic inflation. At the heart of this cosmic odyssey lies the CMBR, a whispered echo from the universe's primordial dawn that unfolds the saga of its early epochs and the daring journey of the first light. 

DOI http://dx.doi.org/10.13140/RG.2.2.11748.76165

The tapestry of time itself is probed, unveiling the temporal intricacies of these realms shaped by phenomena like redshift and the relentless cosmic expansion. Across a 13.8-billion-year narrative, our observational prowess extends to reveal galaxies within a 46.5 billion light-year radius—43% visible, 57% veiled. Anchored by elegant mathematical frameworks like Hubble's Law, this journey through cosmic mechanicsnurtures the growth of understanding and discovery. An expedition both poetic andscientific, this paper unearths the blueprint of the universe, resonating with themes ofcuriosity and evolution that span unfathomable eons.