Look up to the sky tonight to see the beautiful Harvest Moon, colored by the extra thickness of Earth’s atmosphere in the direction toward the horizon. The Harvest Moon is a full moon that falls the closest to the autumnal equinox. This years Harvest Moon qualifies as a supermoon, too. It is turning full less than one day after reaching lunar perigee, the moon’s closest point to Earth for the month. This moon will usher in high tides along ocean coastlines for the next several days. High tides will climb extra high, and low tides will fall exceptionally low.