April 30 (UPI) --NASA officials are planning to launch the space agency's long-duration balloon campaign from ... the tops of clouds and the size and shape of ice particles that help scientists ...

Bertrand Piccard and Brian Jones landed near Cairo after becoming the first people to circle the globe by balloon.

Imagine you're at a hot air balloon event. The balloonists are busy preparing for flight. They spread out the enormous balloons on the grass and check all the lines. The talk is all about today's ...