Visible from Earth's Southern Hemisphere just below the tail of the Scorpion — and close to the core of the Milky Way — it's the largest known star cluster in our galaxy. It's the ultimate ...

A device called an all-optical switch could instead use light to control other light signals without the need for electrical conversion, saving both time and energy in fiber-optic communication. A ...

Modern high-speed internet uses light to quickly and reliably transmit large amounts of data through fiber-optic cables, but currently, light signals hit a bottleneck when data processing is ...