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

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 Universe has long fascinated humanity, inspiring questions about its origins and the delicate balance that allows life to ...

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

Dark matter is one of the biggest puzzles in science. Although it makes up about 85 percent of all matter in the universe, it ...

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

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

Humans live in a universe; that is a fact. Up for debate, though, is whether that universe lives in a sea of other universes—a multiverse. The idea of a multiverse is the subject of much science ...

Cosmologists are pressing rewind on the first instant after the Big Bang by simulating 4,000 versions of the universe on a massive supercomputer. The goal is to paint a picture of the immediate ...

JWST takes a jab at the mystery of the universe’s expansion rate The powerful space telescope's precise measurements confirm we have a problem. Briley Lewis Oct 3, 2023 12:00 PM EDT ...

Science Space Deep Space Cosmic cartographers release a more accurate map of the universe’s matter It’s another step in understanding our 13 billion year-old universe. By Laura Baisas ...

Something isn't quite right in the universe. At least based on everything physicists know so far. Stars, galaxies, black holes and all the other celestial objects are hurtling away from each other ...