Difference between revisions 2290301 and 2290302 on enwikiversity

[[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'''.
{{clear}}

(contracted; show full)eflight|orbital]] satellite that carried the first space-borne gamma-ray telescope. This was the earliest beginning of space [[gamma-ray astronomy]]. Launched on April 27, 1961 by a [[w:Juno II|Juno II rocket]] the satellite returned data until November 17, when power supply problems ended the science mission. During the spacecraft's seven month lifespan it detected twenty-two events from gamma-rays and approximately 22,000 events from cosmic radiation.
{{clear}}

==Sun-synchronous orbital rocketry==

{{main|Rocketry/Sun-synchronous|Sun-synchronous orbital rocketry}}⏎
[[Image:Heliosynchronous Orbit.png|thumb|right|250px|Diagram shows the orientation of a Sun-synchronous orbit (green) in four points of the year. A non-sun-synchronous orbit (magenta) is also shown for reference. Credit: [[commons:User:Brandir|Brandir]].]]
[[Image:ERS 2.jpg|thumb|left|250px|The photograph shows a full-size model of ERS-2. Credit:Poppy.]]
(contracted; show full)<!-- categories -->
[[Category:Astrophysics/Lectures]]
[[Category:History/Lectures]]
[[Category:Radiation astronomy/Lectures]]
[[Category:Resources last modified in December 2019]]
[[Category:Technology/Lectures]]
[[Category:Vehicles/Lectures]]
{{NOINDEX/DRAFT}}