Dark matter is an elusive form of matter that almost never emits, absorbs or reflects light, while only weakly interacting ...

Before you submit an error, please consult our Video Help page. Steve Trash Science is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android ...

Almost 100 years ago, a revolutionary discovery was made in the field of physics: microscopic matter exhibits wave properties. Over the decades, more and more precise experiments have been used to ...

Dark matter is one of the most mysterious and yet most ubiquitous substances in the Universe. While things like human beings, the Earth, the Sun, and everything that emits or absorbs light in space ...

Dark matter is thought to make up most of the matter in the universe, but the only way it interacts with its surroundings is ...

Students will learn how to categorize matter as either pure substances or mixtures. Students will apply tests, based on physical properties of matter samples, to determine whether a mixture is ...

Before scientists discovered the new state of matter last week, we were basically all used to just three states of matter. After all, during our daily lives we encounter some variety of solids, ...

for the Use of Higher Forms in Schools, and First Year Students at the Universities. By A. H. G. Palmer and K. S. Snell. Pp. xiv + 335. (London: University of London ...