A cluster of strange objects has been drifting high over the Australian continent in the past week, and if not for publicly-available plane-tracking applications, they may well have cruised past without anyone noticing.
The state-of-the-art devices, which can inflate to the size of tennis courts, are part of a radical plan to expand internet services around the world.
“You can think about Loon balloons like a floating mobile phone tower,” said Libby Leahy, an Australian who works for Project Loon in California.
http://www.abc.net.au/news/2017-06-03/balloons-floating-over-australia-part-of-radical-internet-plan/8584738