As Tropical Storm Nicole moved toward Florida this week, some of its clouds went as far south as Puerto Rico. There, a photographer captured an elusive and strange phenomenon known as “sprite ...

Earlier this month, an astronaut aboard the International Space Station snapped these gorgeous shots of the Earth from orbit. There’s a lot to marvel at here, from the beauty of the lights of home to ...

High-altitude lightning bursts called “sprites,” which are difficult to see with the human eye, explode in a burst of red above the more easily seen white flashes of a powerful thunderstorm over ...

When a thunderstorm recently lit up the night sky, cameras captured towering red shapes that looked uncannily like glowing jellyfish hanging above the clouds. The images raced across social media, and ...

An e-mail from George in Rock Island wants to know more about sprites -- specifically whether they are related to lightning. Scientists at the University of Houston have been investigating an ...

Researchers have uncovered new details about a rarely seen phenomenon involving green "ghosts" in the Earth's upper atmosphere, according to a study. The findings, published in the journal Nature ...