A backward, mirror universe could explain the existence of dark matter. If an anti-universe exists, it would run backward in ...

In one new theory, it is possible that dark matter exists in a mirror universe where there are only dark versions of forces ...

A surprising new paper suggests that the universe's expected lifespan is just 33 billion years, and that the cosmos will ...

Extraordinary claims require extraordinary evidence,” Carl Sagan once warned a maxim now resonating through telescopes worldwide as astronomers grapple with a mind-bending new discovery. The James ...

The new measurement from LHCb has found differences between baryons and antibaryons, which are made of three quarks and three ...

Chinese astronomers have spotted a hidden supermassive black hole in the background of a peculiar gravitational wave event ...

That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that ...

NASA's James Webb Space Telescope has potentially identified 300 ancient objects, possibly early galaxies formed shortly ...

A monster galaxy from the early universe shows that the cosmos was rich with oxygen when it was only less than 3% of its ...

The first chemical reactions in the wake of the Big Bang have been recreated for the first time in conditions similar to ...

Science Physics Our universe probably isn’t special enough to be in a multiverse Leto Sapunar Feb 10, 2022 6:00 PM EST ...

The universe is expanding at an accelerating clip, and that evolution, physicists expect, will lead the cosmos to a conclusion. Scientists don’t know quite what that end will look like, but they ...