Solar Mirror Yo-Yo ...

[Dave Monroe]

... and, of course, recall Yoyodyne, yo-yo + dynamo, yo-yo dynamics,
yo-yo motion ("Ev'rybody's do-oo-ing abrand new dance now/ C'mon, baby,
do the ...") ... but that solar mirror yo-yo thing DOES work, and I've
posted some sites with graphics demonstrating as much already, but I
realize I didn't make that explicit, at least for the non-mathematical,
so ... now, imagine that the center point is the sun, the red ball is
the planet going around the sun, and the horizontal line is the mirror.
Follow the bouncing blue ball, i.e., the mirrored reflection of the red
ball ...

http://members.nbci.com/Surendranath/Shm/Shm01.html

Now, ev'rybody ...