New study casts doubt on theory about the role comets played in kick-starting life on Earth — Live Feedhttps://www.live-feeds.com/feed/new-study-casts-doubt-on-theory-about-the-role-comets-played-in-kick-starting-life-on-earthContinuously updated, source-cited coverage. Comets unlikely to have seeded life on Earth, study suggestshttps://www.live-feeds.com/feed/new-study-casts-doubt-on-theory-about-the-role-comets-played-in-kick-starting-life-on-earthhttps://www.live-feeds.com/feed/new-study-casts-doubt-on-theory-about-the-role-comets-played-in-kick-starting-life-on-earth#u173341Wed, 04 Nov 2026 07:19:56 +0000A new study from the University of Cambridge challenges the decades-old theory that comets delivered the building blocks of life to Earth. Computer simulations suggest that comet impacts would have destroyed organic molecules, making it unlikely for comets to have seeded life on early Earth. This research contradicts previous scientific thinking and suggests alternative explanations for the origin of life.Why it mattersThe theory that comets played a crucial role in kick-starting life on Earth has been debated for decades. Comets are known to carry organic compounds, which are essential for li