What are the moon phases and what do they look like?

1 Answer

Moon is a sphere and is always lit by Sun light ..So 50% of its surface is always illuminated,.

Explanation:

But from Earth we do not see all these 50% always. Depend upon the earth/moon position we see only part of this lit portion.On full moon night we see 50% of the lit sursface and on new moon we do not see moon.
So in between Full moon and new moon we see different phases of Moon.See picture.enter image source here
picture creit Vecteezy.com.