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Reference.org
On-orbit satellite servicing
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<p>On-orbit satellite servicing refers to refueling or repairing <a href="/facts/Satellite/PTX8c68t">space satellites</a> while in orbit. </p><p>New commercial interest in on-orbit servicing of satellites is in large part due to the decreased costs of launching commercial satellites and the rise of low orbit, rather than <a href="/facts/Geostationary_orbit/VBq1v5Kr">geostationary</a>, satellites for which servicing costs less. </p>