A rare fire rainbow appeared after a muggy day along the NC coast Tuesday, according to the National Weather Service.

NASA astronaut Nichole Ayers photographed a rare atmospheric phenomenon over the US and Mexico known as a "sprite" that's ...

In a breakthrough that could pave the way for more efficient and cleaner energy, researchers at Chalmers University of Technology in Sweden have discovered a rare phenomenon that changes what we know ...

U.S. astronaut Nichole "Vapor" Ayers captured a spectacular view of a phenomenon known as a "sprite" blazing to life above an ...

A fire-fueled thunderstorm cloud can form on top of a wildfire’s smoke plume, allowing the plume to grow vertically very ...

NASA astronaut Nichole Ayers, who is aboard the International Space Station as pilot of SpaceX Dragon’s Crew-10, captured the ...

A rare light phenomenon lit up the sky over Barangay Patao, Bantayan Island on Sunday night, July 13, stunning residents and ...

This special “smiling rainbow” only appears in the sky when the sun is around 22 degrees above the horizon. The sun may be ...

A rare roll cloud was seen passing over several beaches in Portugal on Sunday, June 29. The phenomenon features a cloud that ...

Beachgoers in Portugal scrambled for cover over the weekend as the sweltering heat gave birth to a rare “tsunami roll,” or ominous wave of dark clouds over the water.

Portugal like much of Europe has experienced a heat wave recently, but another rare weather phenomenon also gripped many across some parts of the northern and central Coast of Portugal on Sunday.