Twice round the world by Boomerang balloon — Science News, April 7, 1973
Scientists recovered for the first time … a balloon scientific payload after a long-duration, twice-around-the-world flight. The project is called Boomerang and is designed to demonstrate the feasibility of using balloons for long-duration research.
Earlier this year, the United States shot down several objects high above the country, one of which is alleged to be a surveillance balloon from China. Others are likely “tied to private companies, recreation or research institutions studying weather or conducting other scientific research,” President Joe Biden said February 16 in a news briefing. Some scientists worry rising concerns over spying could limit where high-altitude balloons go — a tall order for vessels that follow the wind.