In the image, the yellow shaft carries the sun gear which is almost hidden.
From the en.wikipedia.org
The rear unit ring gear hub had a small gear machined on its end which served as the reverse unit sun gear.
From the en.wikipedia.org
But then, on a morning when I imagine the sun shone, a gear shifted in my mind.
From the independent.co.uk
Typically, the planet gears are mounted on a movable arm or carrier which itself may rotate relative to the sun gear.
From the en.wikipedia.org
If the annulus is held stationary and the sun gear is used as the input, the planet carrier will be the output.
From the en.wikipedia.org
Epicyclic gearing or planetary gearing is a gear system consisting of one or more outer gears, or planet gears, revolving about a central, or sun gear.
From the en.wikipedia.org
A useful metaphor is a planetary gear system with the black hole being the sun gear, the ice skater being a planetary gear and the outside universe being the ring gear.
From the en.wikipedia.org
Since the rear unit ring gear with its attached reverse unit sun gear and the reverse unit ring gear were both locked to the transmission case, the planet carriers and driveshaft could not turn.
From the en.wikipedia.org
As we pack up our gear, the sun sets while the moon simultaneously rises.