NASA Research Traces How Weightlessness Breaks Down Muscles at Molecular Level

New NASA-supported research reveals that weightlessness disrupts the constant molecular "conversation" between muscles and gravity, triggering breakdown at a cellular level long before visible changes appear. Scientists used a purpose-built Earth-based model to simulate microgravity and trace exactly how this deterioration unfolds. The findings may have applications beyond spaceflight, potentially informing treatment of muscle-wasting diseases on Earth.

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