4 dias para o equinócio de outono

18th sept: ‘harvest moon’  …  22nd sept: autumn equinox

4 Sky Events This Week: Harvest Moon, Green Giant, and Fall Equinox

“Astronomically speaking, the September equinox marks one of the four major turning points in the cycle of seasons. The Earth spins on its axis, which is tilted at 23.5 degrees with respect to its orbital plane. On these days, however, the Earth’s axis is neither tilted away nor towards the Sun, but has both northern and southern hemispheres experiencing equal amounts of sunshine.”

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uma entre mais de sete biliões de criaturas humanas do planeta Terra...
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