The late great David Crosby was no ordinary folk musician. His strange views on UFOs and alien contact pretty much sum that up perfectly.

I've always loved one of John Wayne's greatest Westerns from the 1950s, but a fan theory about his character makes it an even ...

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

Researchers repurposed an experiment originally intended to detect gravity, which involved a floating magnet in a ...

Quarks unexpectedly breaking symmetry in a recent experiment may transform our fundamental understanding of matter and the ...

Edited by Joshua Combes, University of Colorado, Boulder, CO; received September 9, 2023; accepted February 10, 2024, by Editorial Board Member Bernard F. Schutz ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum ...

Results from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy, a mysterious force in the universe, is ...

It shapes galaxies and bends light, but is dark matter even real? Find out what scientists know, what they’re still guessing, and why this mystery matters.

Scientists have been arguing about the origin of strange streaks on Mars since the earliest missions to the Red Planet.

Much remains unknown, such as the true nature of the dark matter that dominates gravity inside galaxies and the dark energy that drives the universe’s accelerating expansion. Yet even for these ...

Dark matter is more than five times as abundant as all the visible matter in the universe. So why can't we see any of it?