As if dark energy weren't already mysterious and baffling enough, new research suggests that this unknown force may not be ...

A new study is implying that the universe may actually be slowing down and that the culmination of the decrease in dark ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously ...

A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By ...

Astrophysicists at the University of Chicago have developed physics-based models suggesting that dark energy could be changing over time. Dark energy, the mysterious force causing the universe to ...

Dark energy and black holes are two of the most mysterious topics when it comes to space, but they might actually be linked.

Cosmology is already a complicated field of study, so switching up the variables is extra rough.

New strategies may soon allow scientists to test dark energy theories within our own solar system, linking cosmic-scale physics to local observation. Science advances through a cycle of proposing ...

In a controversial new paper, researchers argue that the acceleration of the universe's expansion has slowed down.

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from dark-energy observatories. After expanding to its peak size about 11 billion ...

These are exciting times to explore the largest unanswered questions in physics thanks to high-tech experiments and very precise data. That's particularly true of dark energy, the name given to the ...

Last year, we reported on an exciting hint of new physics in the first data analysis results from the Dark Energy Spectroscopic Instrument (DESI)—namely that the dark energy, rather than being ...