Hayabusa: 'sementes da vida' estão em asteroide; entenda

A missão Hayabusa2 do Japão retornou com as amostras coletadas do asteroide próximo à Terra. A investigação desse material pode revelar informações sobre a formação do Sistema Solar.

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Os pesquisadores desejam determinar como a matéria orgânica foi distribuída pela nebulosa solar, oferecendo pistas de como a vida surgiu, e agora uma nova pesquisa pode ter encontrado “sementes de vida” no material.

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Anteriormente, os cientistas já haviam apontado a presença de mais de 20 aminoácidos, vitamina B3 ou niacina e poeira interestelar nas amostras do asteroide.

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No novo estudo, foram encontradas evidências de impactos de micrometeorito que deixaram manchas de vidro e minerais derretidos.

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De acordo com os pesquisadores, esse micrometeoritos vieram de outros cometas, compostos por matéria carbonácea semelhante à matéria orgânica primitiva encontrada na poeira cometária antiga, podendo ser as sementes de vida que foram trazidas à Terra.

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