Earthshine's brightness is also affected by the Moon's albedo . Albedo is a measurement of how much sunlight a celestial object can reflect. It is measured on a scale, which ranges from 0 to 1. An object that has albedo of 0 does not reflect sunlight and is perfectly dark. A celestial object with an albedo of 1 reflects all of the Sun's rays that reach it.
The Moon has an average albedo of 0.12, while the Earth's average albedo is 0.3. This means that the Moon reflects about 12% of the sunlight that reaches it. The Earth on the other hand, reflects about 30% of all the sunlight that hit its surface. Because of this, the Earth, when seen from the Moon would look about a 100 times brighter than a full Moon that is seen from the Earth.