NASA scientists study flashes from Earth's atmosphere
NASA's Deep Space Climate Observatory (DSCOVR) has caught hundreds of flashes reflecting off the Earth since its launch in 2015. In previous studies of flashes captured by Galileo spacecrafts in 1993, scientists only studied reflections off oceans. However, in the new study, NASA scientists deciphered the cause to the big reflections over land as high-altitude, horizontally oriented ice crystals.