To maximize deep-sky viewing, why is the Moon's phase considered a critical factor?

Answer

The brighter the Moon, the harder it is to see fainter meteors or deep-sky objects.

Lunar glare washes out fainter astronomical targets, making observation sessions best scheduled when the Moon is less bright or absent.

To maximize deep-sky viewing, why is the Moon's phase considered a critical factor?

#Videos

Two Comets SWAN & Lemmon To Light Up October Sky - YouTube

astronomyOctobersky event