Definitions

1. noun

The theory that life on Earth originated from elsewhere in the universe, especially from comets or meteorites.

“The scientist proposed the idea of panspermia as a possible explanation for the origin of life on our planet.”

2. noun

The dispersal of microorganisms or other organic matter through space, often by comets or meteorites.

“The discovery of extraterrestrial microorganisms suggested a new mechanism for panspermia.”

3. noun

The hypothetical transfer of life or organic matter between celestial bodies, such as planets or moons.

“The possibility of panspermia between the moons of Jupiter and its parent planet has been a topic of scientific research.”