An astronaut on the International Space Station captured mysterious blue spheres in the sky last year. NASA's Earth Observatory shared the photo last year, as well, shortly after it was taken. The ...

Sphere in Las Vegas isn’t just a round vehicle for a series of fall U2 concerts — it’s also host to an immersive screen of mammoth proportions that will be its own attractions when there aren’t any ...

Some of the technology involved has already been previewed for journalists in a quarter-sized Sphere prototype in Burbank, as part of the ramping up to the U2 shows that begin when Sphere opens just ...