The last Supermoon of 2019, known as the 'super worm equinox moon' is seen behind silhouetted leaves in Los Angeles, California on March 20, 2019, coinciding with the spring equinox. - The last of three Supermoons which began the year, the 'worm moon' gets its name from folklore tradition, occurring at a time when frost on the ground melts and earthworms begin to emerge. (Photo by Frederic J. BROWN / AFP)