This is amazing Animation for students to understand Retrograde motion of Inner PlanetsThanks.

I'd love to use your videos on Khan Academy

Oh Sole Mio! Merci avec mon tout coeur. I'm in the mood for love again with the help of this magnificient bird. In New York we have to listen to the cicada; it's so boring! Thank you again for sharing the experience.

done

nice simulation, could you make a similar video showing the phases of Venus?

Good upload

@8bmc6 You find an introductory article explaining retrograde motion on englisch wikipedia if you search for apparent retrograde motion

Someone tell me how it starts going backwards

its like a freakin huge black ball! wow! thx!

I also have all previous Redshift version. However I think Redshift 3 does not numerical integration on perturbed orbits, doesn't it? Redshift 7 does (only for one at a time though). Thanks

Thanks a lot!