Final answer:
Panspermia theory speculates on the extraterrestrial origin of life on Earth and raises questions about life's existence on other planets.
Explanation:
Panspermia is a hypothesis suggesting that life on Earth originated from extraterrestrial sources, possibly brought by comets or meteorites. This theory proposes that dormant life forms deposited on these celestial bodies could have been delivered to Earth and eventually populated our planet once the conditions were favorable. While there is no concrete evidence supporting panspermia, the concept sparks discussions about the possibility of life existing on other planets.
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https://brainly.com/question/37419567