Light from the earliest galaxies has travelled for 13.8 billion years, yet the expansion of space means those sources are now roughly 46.5 billion light-years away. This expansion was first ...

Very early dark energy (vEDE) may have accelerated the universe’s expansion just 380,000 years after the Big Bang, new research suggests.

For more than half a century, scientists have tried to understand dark matter—a mysterious form of matter that doesn’t emit or absorb light but is thought to make up most of the universe’s mass. Its ...

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

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

"We will push the limits of what we can observe, and use every gravitational lens we detect with Roman to pin down the particle nature of dark matter." When NASA’s Nancy Grace Roman Space Telescope ...

WASHINGTON — Dark, a French startup developing air-launched spacecraft technology to capture and dispose of orbital objects, has shut down operations after struggling to establish a sustainable ...

This shimmering view of interstellar gas and dust was captured by the European Space Agency's Euclid space telescope. The ...