wonders-of-the-cosmos:Retrograde motion of Mars in the night sky of the Earth.Image Credit: Tunc Tezel

wonders-of-the-cosmos:Retrograde motion of Mars in the night sky of the Earth.Image Credit: Tunc Tezel

tags: Sticky Fingers,

from: https://amused-itself-to-death.tumblr.com/post/683716936035598336