If dark stars existed, they would have been capable of forming in the universe before ordinary stars could have formed. When ...

The coldest and densest molecular gas clouds in the interstellar medium can have temperatures of 10 K (-505 °F/-263 °C), ...

The Standard Model of our universe doesn’t match the evidence, in part because of dark energy, a ghostly force pushing the ...

Our best models of the cosmos don't add up — but that could change if the universe is actually made of a viscous 'fluid,' a ...

An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

Nearly everything in the universe is made of mysterious dark matter and dark energy, yet we can’t see either of them directly ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

In this season of reflection, it's awe-inspiring to consider how so much is still beyond our scientific understanding — from the big questions of the origins of the universe and life, to the more ...

For centuries, the principle of symmetry has guided physicists towards more fundamental truths, but now a slew of shocking findings suggest a far stranger idea from quantum theory could be a deeper dr ...

Scientists are studying bees’ surprising maths skills to explore whether numbers could be a universal language for ...

This problem has stumped scientists for thousands of years. In this video, we explore: - Why is the sky dark? (00:53) - Is the Universe Infinite? (02:18) - Solving Olber’s Paradox (05:32) - What is ...