Did you know the today, the 31st, is a day you can view the blue moon?
Blue moons show up when there is a second full moon within one month. They often appear 29.5 moon cycles and usually you can only see the full moon once month. It usually takes a number of years before you can see a blue moon. Here are cool illustrations that remind us of the full moon and blue moon and how fantastical it may look. Enjoy the night sky and full moons on pixiv!