The third supermoon of 2023, and the Moon's closest approach to Earth this year, is in the sky with Saturn and Neptune for a second night as the calendar changes to the month of September.  To the right of Saturn are the globular clusters M15, M2 and M30 in a vertical line across the constellation Aquarius, and Jupiter and Uranus are trailing the Moon.  September 28-29 will be the fourth and final supermoon of 2023. #BlueMoonSupermoon #BlueMoon #BlueSupermoon #Supermoon2023 #Supermoon #Moon #Perigee #Astronomy