2007-03-21 05:02:53 · 2 answers · asked by ispmiller 1 in Science & Mathematics ➔ Astronomy & Space
Hi ISP!
Mercury doesn't go through retrograde motion.
Only planets located beyond the orbit of the earth go through retrograde motion. It happens when the earth, moving faster than they are, passes them, and the outer planet seems to move backward.
Inner planets like Mercury do appear to back up as their orbits carry them in front of the sun, but this is not retrograde motion. And it only happens when the planet is moving from the evening sky to the morning sky, not vice versa. Mercury, today, has reached its farthest from the sun in the morning sky and will gradually disappear behind the sun. It doesn't change course in its motion this time, however.
2007-03-21 05:39:43 · answer #1 · answered by Anne Marie 6 · 0⤊ 0⤋
This is astronomy not astrology. Please come and join us in the 21st century.
2007-03-21 12:08:36 · answer #2 · answered by Gene 7 · 0⤊ 3⤋