6999639
Texto para a questão:
Conforme o texto, um critério tradicionalmente utilizado por astrônomos para avaliar estrelas envolve
Lê-se em: “Astonishingly, scientists don’t know exactly what the sun is made of. As a result, they don’t know what the other stars are made of, either. ‘The sun is a fundamental yardstick,’ (...)”