Unusual night-shining clouds seen from U.S.
Friday, June 19, 2015 - 14:00
in Astronomy & Space
Brooks HaysWASHINGTON, June 19 (UPI) -- On June 10, both on-the-ground observers and NASA's Aeronomy of Ice in the Mesosphere (AIM) spacecraft spotted noctilucent, or "night-shining," clouds.