Cosmology

A new global survey of physicists reveals widespread disagreement on fundamental questions about the universe, including dark matter and quantum gravity.

Early galaxies may be up to four times more massive than thought due to a hidden population of small stars, challenging galaxy formation theories.

The universe's expansion can cause distant galaxies to recede faster than light, a phenomenon that does not violate Einstein's theory of relativity because it involves the stretching of space itself, not the movement of objects through space.

A theoretical study suggests that dying stars might create new universes powered by dark energy, forming gravastars instead of black holes.

A new model, the Cosmological Hart-Tipler Conjecture, suggests advanced extraterrestrial life is extremely rare, incorporating cosmic expansion into the analysis.

A new philosophical analysis challenges the "block universe" model of spacetime, suggesting that a fundamental misunderstanding of existence versus occurrence has led to confusion in modern physics.

Astronomers have captured the clearest direct image of a cosmic web filament, revealing a three-million-light-year strand connecting two ancient galaxies.

A new survey of physicists reveals a lack of consensus on fundamental questions in cosmology, including the Standard Model and the nature of dark matter.

University students built a dark matter detector to search for axions, establishing new experimental limits and demonstrating the value of small-scale research.

New research on ultra-faint dwarf galaxies suggests they hold crucial information about the early universe's conditions and star formation.