From the ISS, NASA astronaut Don Pettit captured rare purple lightning and mysterious upper-atmosphere flashes above massive ...

NASA astronaut Nichole Ayers captured this image of lightning while orbiting aboard the International Space Station more than ...

Astronaut Nichole Ayers took the photograph while orbiting about 250 miles above Earth. NASA astronaut Nichole Ayers proved ...

For as long as people have watched storms roll across the sky, lightning has inspired awe and fear. You can see the flash and ...

NASA astronaut Don Pettit captured a unique spectacle of rare purple lightning and other atmospheric phenomena from the International Space Station.

Scientists now have proof that Mars' dusty storms can generate mini lightning, putting to rest decades of speculation. Of course, everything on Mars has to be different from Earth — not even the ...

Lightning strikes are always a serious threat, no matter what season it is. For the last year, lightning strikes in the US ...

Mars regularly experiences dust storms, like this one captured by NASA's Mars Reconnaissance Orbiter in 2012. Scientists say they found evidence of "mini lightning" during some of these storms. NASA / ...