A stunning blue light likely caused by SpaceX Falcon 9 rocket fuel illuminated the night skies over Europe on Monday.

A strange blue spiral lit up the skies over Europe on ... and Hungary to flood social media with photos and videos, along with requests to identify this weird light. Some users even speculated that ...

"Our dark adapted eye is more sensitive to blue, so we'll perceive the sky brighter, so more light polluted." Original image has been replaced. Credit: Mashable The new study is the most recent in ...

The difference between how light behaves on Earth and how it travels in the emptiness of space, explains the beautiful blue skies and the vast darkness of space. Why is the sky blue in colour?