Sun halos are an optical phenomena like sun dogs and sun pillars.

PORTLAND (WGME) --Optical displays like sun dogs and halos have been spotted across Maine recently, but what causes them? This week’s Climate Chronicles question comes from Amber: The key ingredient: ...

These celestial wonders can tell us a lot about the state of the atmosphere at home on Earth as well as on other planets. When you purchase through links on our site, we may earn an affiliate ...

It’s a colorful sight in the sky that may seem both fleeting and incomplete. Chances are you’ve seen what appears to be a sliver of bright color up there near sunrise or sunset. That’s called a sun ...