Physics whizz Wendy Sadler MBE demonstrates how one of her science heroes, 20th century astronomer Cecilia Payne-Gaposchkin, used spectroscopy to discover what elements stars are made from.
Can you explain a scientific idea in just three minutes? Take part in FameLab, the world's leading science communication competition: www.britishcou... Subscribe to our channel: / britishcounci. .
Visit our website: www.britishcou...