The spookiness of quantum mechanics has gone cosmic. Physicists have used starlight to perform a “Bell test” to verify the strange nature of quantum mechanics. For decades, such tests have repeatedly ...

GPS is now a mainstay of daily life, helping us with navigation, tracking, mapping, and timing across a broad spectrum of applications. But it does have a few shortcomings, most notably not being able ...

A navigation system based on high-energy particles created by cosmic rays has been successfully tested underground for the first time. The technology could one day be used to guide underground and ...

As humans’ understanding of the universe has deepened over the years, astronomers have discovered that Earth is part of an increasingly large number of cosmic structures, shaped by gravitational ...