SciTech Express

A competing theory to 'dark energy' suggests the universe has different time zones Recent cosmological research has introduced alternative theories to dark energy, suggesting that variations in the flow of time across different regions of the universe could account for the observed accelerated expansion. These theories propose that the universe may have "different time zones," where time progresses at varying rates depending on the density of matter and gravitational energy in a given region. Alternative Theories to Dark Energy 1. Timescape Cosmology Concept : Proposed by physicist David L. Wiltshire, timescape cosmology posits that the universe is not homogeneous; instead, it consists of regions with varying matter densities. This inhomogeneity leads to differences in the passage of time between dense regions (like galaxies) and vast, empty voids. Gravitational Time Dilation : In areas with higher matter density, stronger gravitational fields cause time to flow more ...

Quipu Superstructure: The Largest Known Structure in the Universe Introduction Astronomers have discovered the largest known structure in the universe, named Quipu , an enormous superstructure composed of galaxy clusters and cosmic filaments. Key Characteristics Size & Mass : The Quipu superstructure stretches across 1.3 billion light-years . It has a mass of 200 quadrillion solar masses . Composition : Made up of galaxy clusters, filaments, and voids . It belongs to a class of superstructures , which contain multiple superclusters of galaxies. Effects of Superstructures Cosmic Microwave Background (CMB) Disturbances Superstructures like Quipu create fluctuations in the CMB, which is the leftover radiation from the Big Bang . Impact on the Hubble Constant The presence of massive superstructures distorts accurate measurements of the universe’s expansion rate. This causes variations in the calculation of the Hubble Constant , leading to discrepancies in cosmic models. Gravitational...

Supermassive Black Hole Discovery: Unveiling the Secrets of the Cosmos NASA has recently discovered a unique black hole , LID-568 , which provides new insights into the nature of upermassive black holes . This discovery helps scientists understand the formation and growth of early black holes in the universe. Key Highlights of LID-568 LID-568 is a low-mass supermassive black hole that existed 1.5 billion years after the Big Bang . It challenges previous theories about the early evolution of black holes . Unlike typical supermassive black holes, LID-568 shows signs of rapid growth , defying conventional limits. What Are Supermassive Black Holes? Definition & Characteristics ✔ Supermassive black holes are the most common type of black holes found at the centers of galaxies. ✔ They have intense gravitational forces , causing nearby stars to orbit them in specific patterns . ✔ Unlike smaller black holes, they can reach millions to billions of times the mass of the Sun . How Do The...