You may think that time started 13.8 billion years ago at the birth of the universe, but physicists with alternative ...

Perceived by our telescopes, this would look like an increased acceleration of universal expansion. When Ambjørn and Watabiki ran the calculations for this ‘baby universe’ theory, the ...

New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead ...

LIGO’s adaptive optics system will push laser power beyond 1 megawatt, enhancing gravitational-wave detection and unlocking ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

The universe still is expanding and cooling, leaving fossil evidence from what happened as the universe expanded. These fossils are the evidence that our universe really is evolving. Yet the theory of ...

Evidence supporting this theory includes the cosmic microwave background, a faint "echo" of the universe's early expansion that scientists can study in detail. While the Big Bang Theory is widely ...

Fresh research proposes that the universe might be teeming with particles that move faster than light, according to ...

Researchers say they've discovered the largest known object in the universe, a galactic superstructure called Quipu.