What is that?": Stratospheric balloons over Rapid City - KNBN NewsCenter1
Not UFOs, white Raven Aerostar balloons in the sky
Raven Aerostar launches high-altitude balloon in Hurricane, Utah
Aerostar al Twitter: "Our Thunderhead Balloon Systems are launched by our Raven Aerostar Flight Operations Team. It was a beautiful morning for a launch! https://t.co/s2658gikIs" / Twitter
StratoCat balloons | Facebook
Raven acquires intellectual property from Project Loon partnership - SiouxFalls.Business
Raven Subsidiary Aerostar International Announces NASA Record Achieved With Aerostar Stratospheric Balloons - SpaceRef
Stratospheric gas balloon - RAVEN AEROSTAR - for scientific projects