Galaxies and Cosmology - Part 2
45 reports
What a Parsec Really Measures in Astronomy and Why It Matters
Astronomers use the parsec to measure vast cosmic distances, relying on precise observations of stellar parallax to determine how far away stars are from Earth. The unit is central to mapping the Milky Way and beyond
Hubble Reveals Asymmetric Spiral Galaxy Shaped by Cluster Forces
A new Hubble Space Telescope image captures NGC 4654, a spiral galaxy in Virgo, showing dramatic asymmetry caused by ram pressure stripping and past gravitational encounters
Webb Telescope Links 'Little Red Dots' to Ancient Star Clusters
Astronomers using the James Webb Space Telescope have traced mysterious 'Little Red Dots' in the early universe to the possible origins of globular clusters, offering new clues about how these dense stellar systems formed
Webb Telescope Reveals How Early Galaxies Produced Cosmic Dust
Astronomers used the James Webb Space Telescope to study a nearby dwarf galaxy, uncovering how ancient galaxies enriched the early universe with stardust essential for star and galaxy formation
Possible Twin Supernova Remnants Identified in the Jellyfish Nebula
Astronomers analyzing data from NASA's Fermi Gamma-ray Space Telescope and other observatories have found evidence suggesting both stars in a binary system exploded as supernovae, leaving overlapping remnants in the IC 443 region
Webb Telescope Reveals 4.4-Billion-Year-Old Galaxy Cluster in Formation
The James Webb Space Telescope has imaged the young galaxy cluster MACS J0553.4-3342, capturing light that began its journey 4.4 billion years ago and offering new insight into the assembly of large-scale cosmic structures
Detection of Four-Carbon Sugar Molecule in Interstellar Space
Researchers have identified the sugar molecule erythrulose in a molecular cloud near the Milky Way's center using radio telescopes, providing new evidence that complex organic compounds can form in interstellar environments under extreme conditions
Magnetic Field of Galaxy Cluster Abell 2255 Mapped in Unprecedented Detail
Astronomers have reconstructed the magnetic field structure of the galaxy cluster Abell 2255 using deep radio observations from LOFAR, revealing how gas dynamics shape cosmic magnetism across millions of light-years
Webb data links early red dots to UV-bright companions and black hole seeds
A new analysis of James Webb Space Telescope images suggests that compact 'little red dots' in the early universe may form near ultraviolet-bright companions, offering a possible route to the rapid birth of supermassive black holes
Webb Telescope Maps Gas Feeding a Supermassive Black Hole
Astronomers using the James Webb Space Telescope have mapped gas flows around a supermassive black hole, revealing a self-regulating cycle that may explain rapid black hole growth in the early universe
Webb Telescope Uses Gravitational Lensing to Reveal Ancient Galaxies
The James Webb Space Telescope has captured a detailed image of the galaxy cluster MACS J0553.4-3342, using gravitational lensing to magnify galaxies from the universe's first billion years
Large Hadron Collider Detects Particle Wake Predicted After Big Bang
Researchers at CERN's Large Hadron Collider have observed a long-sought wake effect in quark-gluon plasma, offering new insight into the behavior of matter under extreme conditions similar to those just after the Big Bang
Black Hole Thermodynamics Updated Beyond Hawking's Original Theory
Physicists have proposed a new framework for describing black hole energy loss, extending thermodynamic laws to dynamic black holes and addressing a key limitation in Stephen Hawking's classic model
Webb Telescope Reveals Merging Young Galaxy Cluster 4.4 Billion Light-Years Away
NASA's James Webb Space Telescope has imaged the galaxy cluster MACS J0553.4-3342 as it appeared 4.4 billion years ago, capturing two massive sub-clusters in the process of merging and highlighting the gravitational effects shaping distant galaxies
Dark Matter Theory Links Hidden Dimensions to Cosmic Structure
A new theoretical study explores whether dark matter's elusive nature could be explained by its interaction with a hidden fifth dimension, offering a possible connection between two of physics' most persistent mysteries
Part 2 of 2