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2. Tethered balloon - Wikipedia

   en.wikipedia.org/wiki/Tethered_balloon

   A balloon is a form of aerostat, along with the powered free-flying airship, although the American GAO has used the term "aerostat" to describe a tethered balloon in contrast to the powered airship. [1] Tethered balloons have been used for advertising, recreation, observation, and civil or military uses.

3. Tethered Aerostat Radar System - Wikipedia

   en.wikipedia.org/wiki/Tethered_Aerostat_Radar_System

   The hull of the aerostat contains two parts separated by a gas-tight fabric partition. The upper chamber is filled with helium and provides the aerostat's lifting capability. The lower chamber of the hull is a pressurized air compartment. The hull is constructed of a lightweight polyurethane-coated Tedlar fabric. An airborne engine drives the ...

4. Alan Eustace - Wikipedia

   en.wikipedia.org/wiki/Alan_Eustace

   Eustace started his fall by using an explosive device to separate from the helium balloon. [11] His descent to Earth lasted 4 minutes and 27 seconds [12] and stretched nearly 26 miles (42 km) with peak speeds exceeding 822 miles per hour (1,323 km/h), [10] setting new world records for the highest free-fall jump and total free-fall distance ...

5. Helium production in the United States - Wikipedia

   en.wikipedia.org/wiki/Helium_production_in_the...

   Map showing helium-rich gas fields and helium processing plants in the United States, 2012. From USGS. Helium production in the United States totaled 73 million cubic meters in 2014. The US was the world's largest helium producer, providing 40 percent of world supply. In addition, the US federal government sold 30 million cubic meters from storage.

6. The fate of America's largest supply of helium is up in the air

   www.aol.com/fate-america-largest-supply-helium...

   The Federal Helium Reserve was supposed to be sold off in 2021. Scientists hope it will remain in government hands. ... was a helium balloon. Scientists estimate that, at the current rate of ...

7. Google Earth - Wikipedia

   en.wikipedia.org/wiki/Google_Earth

   Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery.The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.