A vivid blue shape blooming across new satellite images has jolted researchers who spend their careers scanning for subtle changes, not cinematic spectacles. What first looked like a sensor glitch has ...

As "fireball" season kicks off, residents across Florida reported seeing a large, blue-green object blazing across the sky.

Fireballs are bright meteors and can be yellow, blue, red, green and sometimes violet. Fast-moving meteors are frequently reported as having a blue color.

A forgotten object in a museum revealed the oldest blue pigment in Europe, pushing back the use of this color by 13,000 years.