At just 25, Cecilia Payne-Gaposchkin applied quantum physics to a treasure trove of astronomical observations to show that stars are mostly hydrogen and helium.

Objectives Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterised by multiorgan involvement.

Rare earth elements (REEs) are becoming increasingly important in electronic gadgets used in day-to-day life, yet the natural sources and sinks of REEs are largely understudied.

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