A rare optical phenomenon created the illusion of four moons in Russia’s night sky. Here’s what caused it and the science ...

When temperatures get close to 0°, any moisture in the atmosphere can turn into tiny ice crystals called diamond dust. You will often see the ice crystals floating in the air, almost resembling light ...

The spectacle, known as a paraselene, was created by moonlight bending through ice crystals in the frosty atmosphere above ...

While paraselenae are related to the more commonly seen sun dogs, which occur during daylight, sightings involving multiple mock moons are far less frequent.

Skywatchers in Russia’s St. Petersburg witnessed a rare and striking celestial sight when the night sky appeared to host not one, but four moons—a phenomenon known as paraselene. Photographs of the ...

Did you notice the stunning, colorful sight in the sky Monday morning? It wasn’t a rainbow. It’s called a sundog, a weather phenomenon that only happens when the conditions are just right. But what ...

Minnesota witnesses report a swarm of jellyfish-like lights in the night sky. Experts weigh in on possible explanations for ...

Residents of Russia’s Sakhalin Island were left astonished after witnessing a rare and striking sight in the sky that ...

These clouds look unreal, but they are a real phenomenon called Kelvin Helmholtz clouds. They form when one layer of air ...

On August 23rd, the sky witnessed a rare and fascinating event: the famous "black moon." If you've never heard of it, rest assured, it's not a mystical sign heralding misfortune, but rather a natural ...

From Massachusetts to Maryland, sky watchers reported seeing what looked like an alien space craft overhead Tuesday night. She's a dame and an Oscar winner. Golden Eve reminded everyone Helen Mirren's ...