Physicist Richard Lieu first explored the idea that gravity could exist without mass—now he’s got a new cosmological model ...

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

A bold new theory suggests the universe didn’t begin with a single Big Bang, but instead unfolds through a series of ...

The theory in question is known as quantum immortality. It's a concept that suggests our consciousness never truly dies.

Negative energy may soon be discovered, offering breakthroughs in wormholes, warp drives, and galactic travel. Scientists say ...

Using data from space telescopes and other instruments, astronomers, cosmologists, and astrophysicists are able to deduce and ...

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.

A new idea about cosmic expansion has emerged that might remove the need for dark matter and dark energy altogether.

The concept of parallel universes suggests that multiple versions of reality may exist simultaneously. This idea stems from interpretations of quantum mechanics, where every possible outcome could ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

This idea puts a morbid twist on quantum theory, suggesting that a copy of you may remain alive, no matter what.