Cosmology
12 articles
Dark Matter vs. Dark Energy: Two Invisible Rulers of the Cosmos
Dark matter and dark energy, comprising over 95% of the universe, are distinct invisible forces. Dark matter acts as cosmic glue, holding galaxies together through gravity, while dark energy drives the accelerated expansion of space.
Universe May Have Avoided Destruction Through a 'Cosmic Lockdown'
New research proposes that the universe may have avoided instantaneous destruction shortly after its birth by entering a "cosmic lockdown." This mechanism, driven by quantum Zeno effects and environmental decoherence, stabilizes the universe's energy state, preventing catastrophic decay.
How Do Supermassive Black Holes Shape Galaxy Evolution?
In one of the earliest observed galaxies, the central black hole makes up at least two-thirds of its total mass—a proportion thousands of times greater than in nearby galaxies today.
LZ Experiment Detects Unexplained Signal, Hinting at Dark Matter
In a subterranean lab deep beneath the Black Hills of South Dakota, the LUX-ZEPLIN (LZ) experiment recorded a single particle interaction that released 248 kiloelectronvolts of energy.
NASA Roman Space Telescope Explores Universe
NASA's Roman Space Telescope, now successfully launched, is poised to send back 1.
JWST Spots Bright New Black Hole in Early Universe
Just 660 million years after the Big Bang, a newly discovered object, MoM-BH*-1, is producing roughly 100 billion times more energy than any known star could physically generate, according to ScienceD
James Webb Telescope spots supernova from universe's dawn
The universe was just 730 million years old when a massive star exploded, a cosmic event now confirmed by the James Webb Space Telescope.
James Webb spots mysterious Little Red Dots in the early universe
Over 300 mysterious 'Little Red Dots' (LRDs) have been spotted by the James Webb Space Telescope (JWST), appearing just a billion years after the Big Bang.
Quantum Foam: The Theory That Spacetime Itself Is Froth—and How Astronomers Test It
Quantum foam theory posits that spacetime is not smooth but a turbulent froth at the smallest scales, a concept tested by observing how high-energy light travels across vast cosmic distances. Astronomers use distant quasars and gamma-ray bursts to place limits on this theoretical 'foaminess' of spacetime.
Echo map hints at dark matter clusters by supermassive black holes
In five of 14 observed galaxies, a new 'echo mapping' technique has revealed mass around supermassive black holes increases in a way visible matter alone cannot explain, strongly hinting at dense dark
String Theory's Theoretical Insights for Quantum Research
Decades after its inception, string theory continues to generate groundbreaking mathematical insights, yet remains a theory without a single direct experimental confirmation.
Scientists Discover Impossible Black Holes Reshaping Cosmic Theories
For the first time, physicists have observed a 'black hole triple' system where a central black hole devours a star every 6.