Mute
daianeserra13
Por que Plutão deixou de ser um planeta? Durante mais de 70 anos, Plutão foi o nono planeta do Sistema Solar. Mas em 2006, a União Astronômica Internacional (IAU) redefiniu o que significa ser um planeta — e foi aí que o pequeno e gelado Plutão perdeu seu “título”. Segundo a nova definição, para um corpo celeste ser classificado como planeta, ele precisa atender a três critérios fundamentais: 1️⃣ Orbitar o Sol — ou seja, estar gravitacionalmente preso à nossa estrela. 2️⃣ Ter forma esférica, re...
Follow
0
0
0
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