13 articles
New 'cosmic clocks' like time-delay cosmography are helping astronomers tackle the Hubble tension, a discrepancy in measuring the universe's expansion rate. Meanwhile, the return to the Moon aims to teach humanity how to live in space, while the threat of weaponized satellites looms.
Dark matter forms an invisible cosmic web, connecting galaxies with vast filaments. Computer simulations predicted this structure decades ago, and recent observations confirm its existence. The cosmic web provides crucial evidence for dark matter and helps us understand the universe's evolution.
Dark matter, which outweighs all visible matter, surprisingly does not collapse under gravity to form stars or black holes. Instead, it forms vast, diffuse clouds around galaxies, baffling scientists with its unique behavior. Understanding this cosmic enigma is key to comprehending the universe's structure and evolution.
Dark matter, unlike normal matter, does not collapse into stars or black holes because it cannot radiate energy away as heat. Its inability to interact with the electromagnetic force prevents the cooling necessary for gravity to overcome particle pressure. This unique property leads to the formation of vast, diffuse structures like galactic halos and the cosmic web.
Advanced AI civilizations might leave detectable infrared footprints around stars, and galaxies' rotation is independent of their central black holes. The disappearance of dark matter would radically alter galactic structures and cosmic observations.
The Higgs boson, discovered at the LHC in 2012, is now theorized to be a 'portal' to a hidden 'dark sector' of particles. Upgrades to the Large Hadron Collider aim to detect these invisible particles, potentially solving the mystery of dark matter.
Explore the cosmic safety zones around supernovae, the elusive nature of dark matter interactions with neutrinos, and the feasibility of using interstellar objects for future space exploration. This article delves into the science behind these fascinating celestial phenomena.
Exploring Earth's planetary status, the impossibility of figure-8 orbits, the ongoing debate about dark matter's composition, and the future of human spaceflight.
New research proposes that Sagittarius A*, the supermassive object at the Milky Way's center, might not be a black hole but a dense concentration of dark matter. Future observations of its photon ring could reveal the truth.
The concept of dark matter is rooted in a wealth of observational data, not mere theory. Scientists are using new tools to unravel this cosmic mystery, while also clarifying phenomena like the Great Attractor and the extreme climate of Venus.
