could someone help me with the retrograde motion explanation of the planets Mars & Saturn. I am still unclear how the Earth's faster orbital movement makes the outward planets movement go back and forth (like a 'Z' shape movement) :?: http://antwrp.gsfc.nasa.gov/apod/ap070407.html :?: http://ant...
Of all the awe-inspiring images posted on APOD, the one that really fascinates me is the images taken by the Cassini spacecraft during the mid-2010 Equinox where the details of the moons and rings of Saturn are shown, these images are so clear and detailed, they dont need any explanations too one of...