
Simulations suggest comets rarely brought life’s building blocks to Earth
A Cambridge-led modeling study finds that comets rarely, if ever, delivered intact hydrogen cyanide to the young Earth, weakening a 1960s idea about where life's raw materials came from.For more than six decades, scientists have entertained the idea that comets helped start life on Earth by delivering ready-made organic ingredients.A new modeling study argues that this delivery route was, at best, a rare accident.The research, published October 28 in Scientific Reports, focused on hydrogen cyanide (HCN), a simple molecule that is common in comets and serves as a starting material in many laboratory recipes for the building blocks of RNA…



