Ever wonder why the sky is blue on a clear day, but red when there are pollutants such as smoke in the air? Wildfire smoke fills the air with tiny particles. The particles, such as soot, ash, and ...

Earth's atmosphere scatters sunlight, making the sky appear blue due to shorter blue light waves. Longer waves, like red and yellow, dominate sunsets as light travels through more atmosphere. This ...

WEST MICHIGAN — Have you noticed lots of reds and deep oranges in the early morning and evening skies? The concentration of smoke particles in the atmosphere from the wildfires in Canada that produces ...

Physicists have discovered that when beams of light interact at the quantum level, they can generate ghost-like particles that briefly emerge from nothing and affect real matter. This rare phenomenon, ...

Have‍‌‍‍‌‍‌‍‍‌ you ever looked at the sky on a clear day and thought about why the sky is blue but space is black? The question looks very simple, but the answer is one of the most interesting stories ...