For the first time in 99 years, a total solar eclipse will occur across the entire continental United States, and NASA is preparing to share this experience of a lifetime on Aug. 21.
June 21, 2017
from NASA http://ift.tt/2sAYxnN
via IFTTT
June 21, 2017
from NASA http://ift.tt/2sAYxnN
via IFTTT