Astronomy
The Role of Cosmic Rays in Shaping Molecular Cloud Chemistry
Quick fact
Cosmic rays—high-energy protons and nuclei from supernovae and other sources—can penetrate deeper into dense molecular clouds than ultraviolet light, ionizing hydrogen molecules and triggering a cascade of chemical reactions that build complex molecules like methanol and even amino acid precursors.
Why this is interesting
Think of a molecular cloud as a dark, cold factory where the raw materials of stars are built. But what starts the chemical assembly line—what powers the production of molecules inside that darkness? The answer might be particles racing in from exploding stars.