Early Greek thinkers thought units of life called 'spores' were transferred to different planets including earth. What is this theory known as?

Theory of Special Creation Theory of Panspermia Theory of Catastrophism Both 2 and 3

Theory of Panspermia

Early Greek thinkers thought units of life called 'spores' were transferred to different planets including earth. This theory is known as Theory of Panspermia.