UK astrophotographer Josh Dury on night-sky success, his passion for documenting natural skies, a brand-new book and an ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something called the Rayleigh effect, or Rayleigh scattering. But that same ...