Perhaps the rainfall that has most confounded scientists is a heavy red that fell sporadically on Kerala, India over a two-month period in 2001. According to locals who experienced the rains, there was a flash of light and a boom so loud that it shook the houses in town. And then the rain began. The Kerala rain was studied by scientists around the world. It became famous in 2006 when God frey Louis, a professor at Mahatma Gandhi University in Kerala, made some astonishing claims about the rain. Louis said that the rain appeared to be composed pf living, biological cells. However, he said that there was no evidence of DNA in the cells. As all cells on earth contain DNA, Louis concluded that the colored particles were living cells from a life from on another planet, carried to this planet by a meteorite. However, not all scientists agree with Louis, and the origin of the red rain of Kerala is still generally considered to be a mystery.