2:00 March’s Full Moon is known as the Worm Moon in the Traditional Farmer’s Almanac. It was believed that this is the time of year that the earthworms appear as the soil starts to warm up. Some ancient astronomers believed the dark areas of the moon were bodies of water and therefore named them seas and even oceans. We now know that these areas are lava fields. There was volcanic activity over a billion years ago in these areas. The volcanic material has a higher iron concentration than the material in the highlands. This material is less reflective and looks darker. We also know that the volcanic activity resulted more recently than the creation of the Moon, because there are fewer craters in these areas. It is believed that the volcanic material covered over the older craters.