After nine months stranded on the International Space Station (ISS), NASA astronauts Suni Williams and Butch Wilmore are ...

But think of dark clouds behind which the sun is hidden. As a cloud comes out from behind the dark clouds into a bright blue sky, it is edged with a silvery lining. Thus we are moving from ...

On a bright, clear day, the sky stretches above us in a brilliant shade of blue. But have you ever wondered why? The answer lies in a fascinating phenomenon known as Rayleigh scattering ...

A San Diego resident captured a bright blue streak in the sky overhead during a recent SpaceX Starlink launch on Feb. 10. Trump's potential resource deal with Canada is huge: Kevin O'Leary Winter ...