When was the last time all the planets aligned?

6 May 2492 Click to see full answer. Keeping this in view, what would happen if all the planets were aligned?A true alignment can never happen in our solar system because all of the planets orbit at varying angles. The only things that truly could affect our tides, and thus our planet, in the same way that planetary alignment was thought to would be if the sun or our moon were damaged, destroyed, or thrown off orbit.One may also ask, how often do all of the planets line up? about every 5200 years Simply so, what is it called when all the planets line up? A planetary alignment is the common term for the planets being lined up at one time. A combination of at least two bodies lined up in the same area of the sky, as seen from earth, is a conjunction.Did the planets align in 2012?Well, first of all, there are no planetary alignments in December of 2012 and even if there were, there are no tidal effects on the Earth as a result. The only two bodies in the solar system that can affect the Earth’s tides are the moon, which is very close, and the sun, which is massive and also fairly close.

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