The enigma of {{strong|dark energy}} has fascinated astrophysicists for several decades. First observed with the discovery of a {{strong|cosmic acceleration}} in the expansion of {{strong|the universe}} at the end of the 20th century, this mysterious force challenges the classical knowledge of modern {{strong|cosmology}}. Constituting about 70% of the total content of the universe, as revealed … Read more
In brief: Accurate measurements and discrepancies in the Hubble constant: a challenge for modern cosmology The universe expansion is a reality observed for several decades, mathematically formalized by the Hubble-Lemaître law, which describes the linear relationship between the speed of galaxies moving away and their distance, with the Hubble constant (H0) as the proportionality factor. … Read more
The cosmological horizon problem embodies one of the major challenges in modern cosmology, questioning the very foundations of our understanding of the observable universe. This conundrum raises a fascinating question: how can extremely distant regions of the universe, seemingly without any causal contact, exhibit such surprising homogeneity, particularly seen in the cosmic microwave background radiation? … Read more
IN BRIEF Expansion of the Universe: phenomenon of galaxies moving away from each other. Observation by Edwin Hubble in 1929 on distance and redshift. Dynamic spaces: influence of gravity on space-time. Speed of expansion and its impact on cosmology. Origin of the Universe: about 13.8 billion years ago. Big Bang Theory and its implications for … Read more