Difference between revisions 1968416 and 1977520 on enwikiversity

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Lofting technology
[[Image:Skylab-73-HC-440HR.jpg|thumb|right|250px|The Saturn V SA-513 lifts off to boost the Skylab Orbital Workshop into Earth orbit on March 14, 1973. Credit: NASA.]]
Astronomy is performed by location and is subject to local conditions. The shapes and sizes of observatories have changed over time, as have their altitude. The motivations for putting an observatory manned or unmanned at different altitudes has led to a great variety in '''lofting technology'''.
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(contracted; show full)| publisher=SPIE — The International Society for Optical Engineering
| location=Munich, Germany
|url=https://arxiv.org/abs/astro-ph/0004253
| arxiv=astro-ph/0004253 }}</ref> The aircraft can also travel to almost any point on the Earth's surface, allowing observation from the northern and southern hemispheres.
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==Space cannons==
{{main|Space 
cannons|Space cannons}}
[[Image:Project Harp.jpg|thumb|right|250px|This image shows the High Altitude Research Project (HARP) 16 inch (406 mm) gun. Credit: [[w:User:Noahcs|Noahcs]].]]
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