Impact of Volcanic Ash on Air Traffic
January 16, 2013 | United States Geological Survey
This USGS video explains the impact of volcanic ash on air traffic and the work of USGS scientists in monitoring volcanic eruptions.
Earth and Moon Seen by Passing Juno Spacecraft
December 15, 2013 | NASA on YouTube.com
"When NASA's Juno spacecraft flew past Earth on Oct. 9, 2013, it received a boost in speed of more than 8,800 mph (about 7.3 kilometer per second), which set it on course for a July 4, 2016, rendezvous with Jupiter.
One of Juno's sensors, a special kind of camera optimized to track faint stars, also had a unique view of the Earth-moon system. The result was an intriguing, low-resolution glimpse of what our world would look like to a visitor from afar." Quoted from the NASA video release.
June 26, 2013 | Yosemite on YouTube
During the full moon of the the spring and early summer, lunar rainbows, also known as moonbows, can be seen on many park waterfalls.