[3] Space was limited underneath the SPOT 1 satellite, and Viking had to be quite sturdy in order to withstand the stress of launch.

[4] Once in orbit, 4 wire segments of 40 metre length each were spooled out in a radial direction from the edge of the spinning satellite disc.

[4] The mission produced a large amount of extremely useful scientific data, and was deemed a great success.

An initial discussion of what scientists learned from these measurements, which included "global distribution of magnetosphere-ionosphere interaction; auroral morphology and substorm dynamics; heating and expulsion of ionospheric plasma into the magnetosphere; field aligned acceleration into the ionosphere; and electron and ion wave generation" can be found in the article "Scientific results from the Swedish Viking satellite", 1988 Swedish Inst.

[5] After the scientific mission ended, both Viking and the upper stage of the rocket used to launch the satellite became derelict objects that would continue to orbit Earth for many years.