In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

Scientists have long been puzzled by dark matter, an elusive substance that makes up about 27% of the universe. Recent breakthroughs in research are shedding light on its mysterious nature, ...

Astronomers are a step closer to cracking one of the secrets of dark energy—the mysterious force believed to be causing the universe's accelerated expansion.

What is dark energy? Why does dark energy seem to be weakening? Is our universe part of a larger multiverse? What lies beyond the boundary of a black hole? The universe seems to be rotating, and if ...

Stars powered by dark matter instead of nuclear fusion could solve several mysteries of the early universe, and we may have ...

Most of the universe is made up of dark matter and dark energy. The majority of everything else is dispersed throughout space ...

UC Santa Cruz physicist Stefano Profumo has put forward two imaginative but scientifically grounded theories that may help solve one of the biggest mysteries in physics: the origin of dark matter. In ...

In the wake of bombshell findings that suggest dark energy might be weakening as the universe expands, physicists are considering replacing the standard cosmological model of the universe with exotic ...

In a new study, scientists began pondering a pretty wild question: What if black holes can convert dead star matter into dark energy, the mystery force driving the acceleration of the expansion of the ...

Alexey A Petrov receives funding from the US Department of Energy. Scientists working with the James Webb Space Telescope discovered three unusual astronomical objects in early 2025, which may be ...

"It would be amazing if a simple rotation of the universe was the origin of dark energy." What is dark energy? Why does dark energy seem to be weakening? Is our universe part of a larger multiverse?