Mute
Galáxia no Céu
Uma estrela pulsante envolta em ecos de luz. Esta imagem do Telescópio Espacial Hubble, capturada em 2013, revela RS Puppis, uma estrela variável do tipo Cefeida, astros fundamentais para medir distâncias no Universo. Diferente da maioria das estrelas variáveis, as Cefeidas possuem períodos longos e previsíveis. No caso de RS Puppis, seu brilho varia quase cinco vezes em ciclos de aproximadamente 40 dias.
Follow
43
1
18
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