Public domain
Ballooning in the constant sun of the South Pole summer
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
BARREL researchers get ready to release the top part of the balloon, called the bubble, as it fills with enough helium to support itself. Only the top part of the balloon is inflated before launch since the helium expands as the balloon ascends.
NASA Image and Video Library’s own descriptionCredit lineBallooning in the constant sun of the South Pole summer. NASA/GSFC, 2017-12-08. Public domain. ID: GSFC_20171208_Archive_e001147.