An Aerostar "Thunderhead" balloon spotted in Wisconsin skies conducts environmental research and aids communication.

People living in southeast Wisconsin reported seeing a strange object floating in the sky Sunday. "Whether it's flying or ...

A balloon seen in southeastern Wisconsin on June 22 belongs to aerospace company Aerostar, it confirmed to the Milwaukee ...

BROWN DEER, Wis. - It's not a bird or a plane, but FOX6 News got multiple viewer calls throughout the day on Sunday, June 22, ...

MILWAUKEE, Wis. - If you saw a lonely balloon floating through the Milwaukee sky over the weekend, you were not alone. The ...

A mysterious white dot floating in the sky over southeast Wisconsin this weekend has been identified as a research balloon ...