Mute
Mundo News 🪐🌍 （oficial）
Como os astrônomos conseguem medir a distância de estrelas que estão a trilhões de quilômetros da Terra? 🌌 A resposta está na própria luz. Sabemos que a luz viaja a aproximadamente 300 mil quilômetros por segundo. Quando medimos quanto tempo ela leva para chegar até nós, conseguimos determinar a distância da estrela. Foi por isso que surgiu a unidade ano-luz: a distância que a luz percorre em um ano. ⭐ Quando observamos uma estrela localizada a 100 anos-luz, estamos vendo a luz que ela emit
Follow
110
9
16
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