During the day, folks can call this a 'sun halo', but at night and when associated with the moon, try a 'lunar halo'. These ...

The display automatically adjusts its brightness based on your room’s lighting, so it won’t blast your eyes if you check the ...

"They're so rare, and they're incredibly useful scientifically," said Conor O'Riordan of the Max Planck Institute for Astrophysics.

CAPE CANAVERAL, Fla. (AP) - Europe’s Euclid space telescope has detected a rare halo of bright light around a nearby galaxy, ...

Halos are often the result of ice crystals in cirrus clouds. When moon or sunlight shines through these crystals, the light ...