A century-old hypothesis suggesting comets brought the chemical foundations of life to early Earth has been challenged by recent research conducted at the University of Cambridge. Investigators determined that icy celestial bodies typically moved at excessive velocities and impacted the planet at unfavorable trajectories, making the survival of delicate biological precursors nearly impossible.
While the odds were exceedingly low across the inner solar system, scientists noted that Mars might have had a slightly higher probability of capturing intact organic materials from cosmic impacts compared to Earth. Consequently, researchers suggest that asteroids or terrestrial chemical reactions are far more credible explanations for the origin of life's building blocks.
Additional details and follow-up studies are expected to emerge as the scientific community reviews the implications of these findings.
