When will the next alignment of all nine planets be including Pluto?
To the question; if you include the Moon in conjuction with the entire alignment of all major planets and dwarf planets, it only happens once in every 180 trillion years. Without the moon and dwarfs, 340 million years. The exact date I did not find, but that is the cycle of how many years for partial and true FULL alignment. Minor alignments happen more frequently and aren’t truly in a “straight” line.
