Dark matter, though invisible, weighs heavily on how we understand the universe. Its gravity sculpts galaxies, holds clusters ...

Dark matter may have started as light-like particles that abruptly became heavy—a cosmic twist rooted in spin and ...

A new analysis of the sky has finally confirmed where the missing half of the Universe's visible matter has been hiding. In the space around galaxies, it lurks as huge, invisible clouds of ionized ...

Researchers propose a new theory for the origin of dark matter, the invisible substance thought to give the universe its shape and structure. Their mathematical models show that dark matter could have ...

In the space around galaxies, it lurks as huge, invisible clouds of ionized hydrogen. Scientists have finally located the long-sought missing half of the Universe's visible matter, discovering it ...

Dark matter makes up a large portion of the universe, but we've never seen it. Here's what we know, what it might be, and why it could change everything. More than 80% of the universe's matter is ...

Astronomers have known since the 1960s that dark matter’s gravity influences the way galaxies rotate by comparing how they’re expected to spin based on their visible matter to how they ...