O que mudaria se a Terra tivesse dois sóis?

UNIVERSO Imagem: Fala Ciência/AI

Imagine sair de casa e ver duas estrelas brilhando no céu. Os dias seriam mais iluminados. E o calor no planeta seria muito maior.

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Em certos períodos, os dois sóis apareceriam ao mesmo tempo. Em outros momentos, apenas um deles dominaria o céu.

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As temperaturas poderiam subir rapidamente. Parte do gelo dos polos derreteria. Algumas áreas ficariam secas e muito quentes.

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As noites também mudariam. Algumas seriam mais curtas e claras. Isso afetaria animais, plantas e até o ritmo do sono humano.

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Parece coisa de filme, mas sistemas com dois sóis existem de verdade. Astrônomos já encontraram planetas girando ao redor de estrelas duplas.

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Essas descobertas ajudam cientistas a estudar melhor o espaço. E revelam que existem mundos muito diferentes do nosso.

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