A story that begins with three animals riding in a balloon ends with the discovery of protons impacting our atmosphere with ...

The startup is basically two guys from Silicon Valley who have been releasing weather balloons filled with hydrogen gas and ...

Upper air measurements are taken by a group of sensors called a radiosonde. A radiosonde is a very small instrument package that is suspended below a balloon inflated with hydrogen or helium. These ...

Balloons inspired hats ... advertised a small one of eight inches in diameter at 6 livres apiece without air [hydrogen] and 8 livres with it.... [S]everal accidents have happened to persons ...

Other balloon pilots had FAA Airship Pilot Certificates ... agreed to buy sand ballast and a two-thirds filling of hydrogen. (If I took off two-thirds full, I would float automatically at 12,000 ...

The balloons soar 100,000 feet in the air with sensors called radiosondes ... to an hour to fill a weather balloon with helium or hydrogen, get it fitted with a sensor, then ready it for launch ...

Weather balloons are an “essential piece of the forecasting system.” But there will be fewer of them in tornado season this year.

FILE - A National Weather Service weather balloon sits ready for launch in the Upper Air Inflation Building at the National Weather Service, April 27, 2006, in Sterling, Va. (AP Photo/Chris Greenberg, ...