His 1969 book Evolution of the protoplanetary cloud and formation of the Earth and the planets had a long - lasting effect on the way scientists think about the formation of the planets .
The planets was translated to English in 1972 .
His 1969 book Evolution of the protoplanetary cloud and formation of the Earth and the planets , which was translated to English in 1972 , had a long - lasting effect on the way scientists think about the formation of the planets .