Red Rain

Red rain in Kerala was a phenomenon observed sporadically from 25 July to 23 September 2001 in the southern Indian state of Kerala. Heavy downpours occurred in which the rain was primarily red, staining clothes and appearing like blood. Yellow, green, and black rains were also reported.

Louis and Kumar claimed that the red particles did not look like dust but instead appeared to be biological cells. Chemical analyses indicate that they consist of organic material, and so they proposed that the particles may be microbes of extraterrestrial origin.