A blue sky is a good sky. It's a reassuring sight that promises clear weather and bright days. But what does it mean when the sky turns purple? While it's not uncommon to spot purple skies during ...

Blue light is scattered much more than red, which is why the sky is blue during ... The sky may be a deep purple, and stars begin to appear. The term “nautical twilight” came about because ...

When the moon fully eclipses the sun, it's not just the sky that changes ... compared with blue and green. But in dim light, red and orange become dark and muted, while purple, blue and green ...

In the brief darkness of totality, as lunar gloom consumed the land, Gregg tore her gaze momentarily from the sky ... blue and green. But in dim light, red and orange become dark and muted, while ...

The sky is blue -- physicists tell us -- because blue light in the Sun's rays bends more than red light. But this extra bending, or scattering, applies just as much to violet light, so it is ...

But that means purple colors get scattered even more than blue. So why doesn’t the sky normally look purple? Very good point. Two reasons: First, when the sun produces light, it’s not equal ...