According to Timothy Leary (2003:7), Panspermia is the notion that DNA (or its biological precursors) floats through space in crystals and dust waiting to "penetrate" the atmosphere of a suitable womb-like planet, where the DNA (or its constituents) then "weave a tapestry of biological forms that can survive the natural forces" of whatever world happens to be seeded.
According to Leary, DNA (as it seeds a planet) has a purpose. "The mission of DNA is to evolve nervous systems able to escape from the doomed planet and contact manifestations of the same amino-acid seeding that have evolved in other solar systems." (2003: 15). Presumably, when the "mission" of the DNA is completed, some humans will "create the technology to leave the planet and live in post-terrestrial mini-worlds, decode against sectors of the DNA", and assume status as immortal gods.
Leary also feels that DNA is "intelligent," believing that it is our purpose to "learn how to use the nervous system to receive and module DNA's instruction" (Leary, 2003: 15). In Leary's "teleological naturalism", DNA usurps the role of God in the direction of creation and evolution. Although Leary criticizes the "hive societies" of previous evolutionary dead ends, his anthropomorphic speculations about the intelligence, conscious, and organic qualities of DNA lead him to a Borg like conclusion that the DNA "entity wants off the planet" (Leary, 2003: 15). He even goes so far in his anthropomorphic DNA fantasies to suggest DNA has protective qualities "A gene-pool," says Leary, "is a SPECIES-UNIT capable of protecting its young over several generations." (Leary, 2003: 79).
Leary, Timothy (2003). Musings on Human Metamorphoses. Oakland, CA: Ronin Publishing.