While it has become a word, laser used to be an acronym: “light amplification by stimulated emission of radiation”. But there is an even older technology called a maser, which is the ...

Some galaxies eject powerful streams of charged particles—jets—from their centers into space. The prominent jet of Messier 87 ...

Scientists analyzing 443-million-year-old Scottish fossils have uncovered the early evidence that some of the first groups of ...

The most precise clocks ever built are now testing Einstein, hunting dark matter, and reshaping how we define time itself. In ...

Observations with the Event Horizon Telescope enable researchers to localize the likely base of the central outflow in a ...

FOSSILS discovered in Scotland from 443 million years ago of the first groups of vertebrates possessed “surprisingly advanced” eyes and ...