Telescópio James Webb encontra planeta gigante temperado com metano

22 de maio de 2026

Reportado por IA

Astrônomos que utilizam o Telescópio Espacial James Webb da NASA estudaram a atmosfera de TOI-199b, um raro planeta do tamanho de Saturno com temperaturas em torno de 80 graus Celsius. As descobertas marcam a primeira análise detalhada de um exoplaneta gigante temperado.

O planeta orbita uma estrela a mais de 330 anos-luz da Terra e completa uma órbita a cada 100 dias. Os pesquisadores detectaram metano em sua atmosfera usando espectroscopia de transmissão durante um trânsito de sete horas, observado ao longo de um total de 20 horas.

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terça-feira, 12 de maio de 2026, 22:40h