Astrogender, also known as stargender, is a fluid gender identity that transitions from male to female to non-binary, depending on the current configuration of the night sky. An example of an astrogender individual includes identifying as male during midnight and female during the day, or identifying as non-binary when there is a new moon.
The creator of the flag is unknown. The meaning of the stripes' colors are as follows: Dark blue for night time, light gray for the color of the moon, pink for femininity, yellow for the color of the sun, and lastly blue for the color of the sky during daytime. Additionally, the star polygon stands for the prefix "astro-", whereas the royal blue color stands for masculinity.
The term "astrogender" is a composition of astro- (meaning star) and gender, since it's a gender identity that constantly changes depending on the current configuration of the night sky.