A mysterious spiraling blue light illuminated the night skies over Europe on Monday. The cosmic whirlpool was captured in stunning video and appears to have been created by the SpaceX Falcon 9 ...

The question mark is actually five copies of the galaxy ... This depicts how the fabric of spacetime bends around massive celestial objects. Light that would otherwise travel straight gets ...

That’s because your smartphone, tablet, laptop, and TV all give off blue light. So do fluorescent and LED (light-emitting diode) light bulbs. While evidence is growing that shows blue light can ...