An animation which depicts four objects rotating around a purple sphere. The black objects 's laptime is 7 seconds while the purple objects 's one is 8 seconds. It is implemented by SMIL. The tutorial I referred to is here: css-tricks.com/guide-svg-animations-smil/
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Rotation SMIL animation free icon was designed by yamachem for icons Png and presented to its users.
yamachem
3/8/2018