Hello guys, We're here with some new information from NASA : 
One of the greatest challenges of the fourth phase of Air-to-Air Background Oriented Schlieren flights, or AirBOS flight series was timing.
from NASA https://ift.tt/2UjhSa5
via IFTTT
One of the greatest challenges of the fourth phase of Air-to-Air Background Oriented Schlieren flights, or AirBOS flight series was timing.
from NASA https://ift.tt/2UjhSa5
via IFTTT


