An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

A team of scientists has developed a powerful new way to detect subtle magnetic signals in common metals like copper, gold, ...

The mind-bending concept of time dilation results from a seemingly harmless assumption—that the speed of light is the same ...

A team of astronomers led by the Center for Astrophysics | Harvard & Smithsonian has discovered a rare object far beyond ...

Physics attempts to both answer philosophical questions about the nature of the universe and provide solutions to technological problems.