Dark Energy

What if there is more than one cosmological agent for dark energy? This mixture would have strange effects in our universe, making it potentially detectable with upcoming surveys.

Researchers claim to have found serious fault with the existence of dark energy, but not everyone is buying into it.

Astronomers recently completed the first test run of the nearly-complete Dark Energy Spectroscopic Instrument (DESI)

There are voids in the universe, and we can't see them properly. But the good news is that astronomers just got much better at not seeing them properly.

Measures of the universe's expansion taken from different sources don't match. An exotic form of dark energy particles could be the reason why.

Dark energy is even more mysterious than astronomers had thought, a new study suggests.

Advanced alien civilizations might be towing distant starts to their local galaxies to thwart dark energy … and that's how we'll find them.

The vacuum of empty space may be roiling with energy that drives the expansion of space itself, a new hypothesis proposes.

The mysterious dark energy that's driving the universe's accelerated expansion may have its roots in the background "vacuum energy" that pervades all of the cosmos, a new study suggests.

Using one of two donated spy telescopes would improve NASA's WFIRST mission, a report concludes.