Because since the moon is reflecting light from the sun it makes it really bright and easy to see for millions of miles.
We are able to see the Moon, other Planets and even the Sun. The Sun make this possible through its light, even at night. With the help of a powerful telescope we are able to see distant galaxies, distant stars that don't exist anymore, we are seeing only its light which is still travelling.
Like our Moon, other planets can also reflect light from our Sun.
The Moon is a moon and the planets are planets, so it's impossible for a moon to be a planet. See related questions.
You can see the other planets and the moon (at night), because like the Earth, they all reflect light from the Sun.
with your eyes
You see them by reflected sunlight.
You are able to see around about %25 of it
We are able to see the moon because the sun's light reflects off of it. We are able to see only the part that is reflecting the light.
You can see all of them in the sky at night.
stars, the moon, and a few planets...
we get the light from the sun