It was also thought that a meteorological balloon would be radar significant and unlikely to be released in the area.
BBC: Airliner 'had narrow miss with UFO'
Each balloon is fitted with the latest meteorological technology and GPS tracking systems which allow progress to be tracked online.
BBC: David Hempleman-Adams' gas balloon 'flying well' in race
Several balloon companies had terminated contracts with the local meteorological service after the Egyptian revolution, Tharwat Agami, chairman of the chamber of tourism, said.
CNN: Deadliest balloon crash in decades kills 19 in Egypt
应用推荐
模块上移
模块下移
不移动