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 recent resurgence of interest in a bold cosmological theory has reignited debate about the nature of dark matter, the Big ...

A new theoretical study proposes a radical idea in the search for dark matter—using the surface of Ganymede, Jupiter’s ...

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

Matter-antimatter asymmetry puzzles physicists. Learn how the Deep Underground Neutrino Experiment (DUNE) may find answers.

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

The end of the universe is tied to dark energy, astronomers claim, and one day the universe could implode on itself.

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

Fast radio bursts (FRBs) last around a millisecond and in doing so encode otherwise unattainable information on the plasma ...

Astronomers have discovered the most monstrous supermassive black hole ever. At 36 billion times more mass than our sun, it’s so big it’s pushing back the boundaries of possibility. They’ve even had ...