Cosmologist Katie Mack breaks down what the latest findings about dark energy mean for our universe’s future. Either way, it won’t be happy.

ACES will gather ultra-precise data across at least ten observation windows, each lasting about 25 days during the ...

We’ve wondered what powered the Sun for centuries. Early guesses included meteor showers, chemical combustion, and ...

In the vast universe, galaxies rotate in ways that don’t make sense if only visible matter is considered. For almost a century, scientists have tried to explain this by searching for a hidden force ...

The universe’s expansion is accelerating, not decelerating. Our understanding of how the universe works may need an update.

The second is the signature of gravity: as an attractive force ... and Schmidt attributed this deviation to Einstein's cosmological constant, which is represented by the Greek letter Lambda ...

If dark energy is weakening, it stands to reason that eventually gravity will become dominant and the universe will begin to ...

The second is the signature of gravity: as an attractive force ... and Schmidt attributed this deviation to Einstein's cosmological constant, which is represented by the Greek letter Lambda ...

This is no ordinary clock — it's a highly precise instrument built to put Einstein’s theories of special ... down the deeper something is in a gravitational field. That means the ISS, orbiting ...

Then, there's the fact that Einstein's theory of gravity won't "play nice" with ... the emergence of a small positive valued cosmological constant. That's significant because its value better ...

These series of step-like bursts happen so rapidly that they are difficult to observe as these singularities wink in and out ...