seadave
1 Answer
TSC
ABOUT EVERY 10 YEARS OR SO.
First of all, it is impossible for all the planets to form a straight line out from the Sun (or viewed superimposed on each other in the sky) because each planetary orbit is tilted slightly.
To have all of the planets on the same side of the Sun and virtually all within the same quadrant (90°) happens approximately once every 200 years. RARE as far as humans are concerned, but not rare as far as the solar system is concerned.
| 12 years ago. Rating: 1 | |
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