0
Albedo.
The albedo of the Earth is 0.367.
When Vangelis released his album, Albedo 0.39, that was what the albedo of Earth was in 1976.
Fear of a Red Planet - album - was created on 2001-04-17.
There is not fifth planet on Earth, since Earth is a planet...
Earth.
The earth is the only planet on earth.