Carbon Molecules Assemble at Near Absolute Zero in Space

Scientists have long assumed that the complex chemistry that builds the building blocks of life requires heat, but new research from Florida International University challenges that view. Chemist Alexander Mebel and colleagues have shown that carbon‑based molecules can assemble into more intricate structures even in the frigid, dark clouds where stars and planets form—temperatures approaching absolute zero, or –460 °F (–273 °C).

Using advanced laboratory techniques to mimic the conditions of interstellar space, Mebel’s team demonstrated that simple carbon compounds can undergo reactions without the thermal energy previously thought necessary. The findings suggest that the precursors to life’s essential molecules may form in the coldest reaches of space, potentially delivering these ingredients to nascent planets as they coalesce.

If confirmed, this work could reshape our understanding of prebiotic chemistry and the origins of life. By proving that complex molecules can arise in near‑absolute‑zero environments, the study opens new avenues for exploring how life‑supporting chemistry might arise elsewhere in the universe.