>The Dark Side of the Moon, illuminated by Earthglow, is rarely this visible.
Earthglow, or more commonly 'Earthshine', is visible every month during suitable lunar phases. There is no 'Dark Side' of the moon, Anon. At times throughout the month a hemisphere is unlit but there is no permanent lunar 'dark side'. It is a cool shot.
Earthshine is a lovely glow on the unlit portion of the moon
https://earthsky.org/astronomy-essentials/what-is-earthshine/