high-altitude balloon

aircraft

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July 17, 2026

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High-altitude balloons are aircraft designed to reach extreme altitudes, far beyond the capabilities of airplanes. These balloons are typically filled with lighter-than-air gases like helium or hot air, providing buoyancy to ascend. Their primary purpose is scientific research, including studying cosmic rays, atmospheric sampling, and astronomical observations above the troposphere.1234

Unlike airplanes, balloons are stable platforms that do not affect their environment. They are partially inflated at launch, allowing the gas to expand as the balloon climbs, and they adopt a natural, often teardrop, shape at altitude. Materials like polyethylene and polyester film are used for their envelopes, and payloads are suspended below.14

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balloon flight
High-altitude ballooning
Beginning with the 18th century, ballooning has continually achieved higher altitudes. From Charles’s 3,000-meter (10,000-foot) ascent in 1783 to U.S. Army Air Corps Capt. Hawthorne C. Gray’s fatal ascent to 12,950 meters (42,470 feet) in 1927, the maximum altitude was only limited by…
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Beginning with the 18th century, ballooning has continually achieved higher altitudes. From Charles’s 3,000-meter (10,000-foot) ascent in 1783 to U.S. Army Air Corps Capt. Hawthorne C. Gray’s fatal ascent to 12,950 meters (42,470 feet) in 1927, the maximum altitude was only limited by…
Read More