UK Daily Mail 
April 4, 2011
Mars has not always been red.
At least that is the theory proposed by a scientist who has discovered a reason as to how the red planet got its rosy colour.
According to Dr John Brandednberg, about 180 million years ago, a planet-shattering yet naturally occurring nuclear reaction may have wiped out everything on Mars, sending a shockwave that turned the planet into dry sand.
He told Fox News: ‘The Martian surface is covered with a thin layer of radioactive substances including uranium, thorium and radioactive potassium – and this pattern radiates from a hot spot on Mars.
‘A nuclear explosion could have sent debris all around the planet.
‘Maps of gamma rays on Mars show a big red spot that seems like a radiating debris pattern … on the opposite side of the planet there is another red spot.’