Contemporary physics still wrestles with a question posed by philosophers millenia ago: What is the universe made of?

How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.

Caltech researchers have developed PAMs, a novel material that blends the properties of solids and liquids, making them ...

The majority of our evidence for dark matter’s existence comes from observing visible (or baryonic) matter that does not ...

The discovery could help scientists get closer to understanding the mysterious invisible matter that makes up the bulk of our ...

Because we haven't found anything yet, we've started to wonder if dark matter might be lighter or heavier than we thought.

Dark Energy 'Doesn't Exist' So Can't Be Pushing 'Lumpy' Universe Apart Dec. 20, 2024 — One of the biggest mysteries in science -- dark energy -- doesn't actually exist, according to researchers ...

The results of the LZ Experiment's first science run could soon also help to improve dark matter theories. Specifically, it could allow theoretical physicists to better model the behavior of dark ...

(More on that in a moment.) But as usual in science, there's more to the story. On human scales of mass and distance, matter obeys the laws of motion described by Sir Isaac Newton. Chief among ...