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Special balloons and fixed-wing aircraft can act as long-endurance aerial platforms for observation and communication. Known as high-altitude platform stations/systems (HAPS), they fly above most planes but below satellites. Weather, scientific and military balloons are similar; they also ascend to great heights but do not necessarily stay there for a long time. by Dr David Maddison
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A high-altitude research balloon hovered over Hastings Friday morning.
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A high-altitude research balloon could be seen over Hastings Friday morning. It was a research balloon carrying new technology to help fight wildfires.
The Bucharest Stock Exchange (BVB) closed Friday's session down on most indices, and the value of transactions amounted to 48.43 million RON (9.83...
Aerostar has registered during the first 6 months of this year a net profit of 48.829 million RON, which is 14.6% higher than the one obtained...