NASA's ionosphere chemical dump tracers, and its geo engineering weapons platform effects, being given a cover story!, when they are anything but natural!,
https://www.nasa.gov/mission_pages/sounding-rockets/tracers/metals.html https://www.popsci.com/watch-nasa-glowing-clouds
NASA will try to create glowing rainbow clouds,
artificial cloud made from barium
Barium clouds like this help scientists track the motion of Earth's upper atmosphere. These same chemicals are often used to give fireworks their bright colors.
NASA
Edit—6/30/17: After no less than 11 scrubbed launch attempts, NASA finally filled the sky with glowing blue and green clouds. Read more about it here.
NASA will create some bursts of color in the sky over the mid-Atlantic, a sounding rocket is scheduled to take off from NASA’s Wallops Flight Facility in Virginia. About five minutes after takeoff, the rocket will eject 10 soft-drink-size canisters that will spray small amounts of barium, strontium, and cupric oxide into the atmosphere. These chemicals will create red and blue-green artificial clouds that will help scientists understand how particles move around in Earth’s upper atmosphere.
