On particularly humid days, water vapor scatters light in a way that softens the sky’s vibrancy ... to light waves of different lengths—red waves are long and lazy, while blue and violet ...

The universe is full of phenomena that have seemed unexplainable to human beings, but only until science had an answer for it ...

This is a tank full of water, and into that ... be used to explain why the sky is blue and the sunset is red, and as an introduction to the concept of light waves, dispersion and scattering.

But our ocean’s health is in danger. How can the blue economy help restore and protect this vital planetary resource? Ahead of the 2022 UN Ocean Conference this June, we spoke with UN DESA’s ...

Videos posted on X showed a blue orb in the night sky that was visible in the U.K., France and other countries. What are we thinking this spiral, now appearing in the night sky over Europe ...

A strange blue spiral lit up the skies over Europe on ... The spiral appeared over Europe at around 4 pm EDT (2000 GMT) and persisted in the sky for a few minutes. The X feed of Shanghai Daily ...