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By in
on Jul 13, 2012

The changing location of the vernal equinox.

The wobbling of Earths axis causes the location of the equinoxes to occur earlier every year. Here, the location of the sun at the vernal equinox (March 21) is shown to drift over a 6000 year period. Credit: Kevin Heagen (via Wikipedia)

The wobbling of Earths axis causes the location of the equinoxes to occur earlier every year. Here, the location of the sun at the vernal equinox (March 21) is shown to drift over a 6000 year period. Credit: Kevin Heagen (via Wikipedia)

The changing location of the vernal equinox.