JWST's Puzzling Early Galaxies Don't Break Cosmology--But They Do Bend Astrophysics
The James Webb Space Telescope (JWST) has observed bright galaxies that stretch back to the early universe, which is puzzling because galaxies shouldn't have had enough time to become so massive.
Studies suggest that the unexpected girth of these early galaxies could be attributed to astrophysical explanations like earlier-forming black holes or bursts of star formation, rather than a flaw in our understanding of cosmology. [ more ]
NASA releases free e-book on Hubble space mysteries
NASA released a free e-book 'Hubble Focus: The Dark Universe' exploring dark matter and dark energy learnings from the Hubble Space Telescope missions. [ more ]
How supernovae are helping uncover the mysteries of dark energy
Only 5 percent of the universe is made up of visible matter, while 27 percent is dark matter and 68 percent is dark energy.
Scientists are studying the mysteries of dark energy by analyzing data from the Dark Energy Survey, focusing on Type 1a supernovae to measure the expansion of the universe. [ more ]
Collapsing Sheets of Spacetime Could Explain Dark Matter and Why the Universe Hums'
Hypothetical domain walls may have formed after the big bang, creating a background of ripples in spacetime and possibly small black holes as dark matter. [ more ]
Simulations reveal the hidden behaviors of dark matter
A new theory suggests that colder dark matter moved at slow velocities while standard matter streamed past it at supersonic speeds, leading to the formation of small, bright galaxies earlier than previously thought.
The presence of small, bright galaxies in the early universe would confirm the cold dark matter model, as only the velocity between two types of matter can produce this type of galaxy. [ more ]
The Universe May Be Shaped Like a Hall of Mirrors, Scientists Say
The shape of the universe, per new research, could be more complex than previously thought, possibly including exotic structures like a 3-torus. [ more ]