Luas de Marte podem ter nascido da destruição de asteroide

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[{"selector":"#anim-5fcd2847-9088-4e0d-b693-dc3edc3b564e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cc245544-e0bb-4c21-8779-5e6fab013f62","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2c2713ed-b0a2-4d6a-ae38-10bbabcf8d74","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-8f05d42c-8f86-456a-b799-cb5912c78f9b","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Primeiramente, porque são pequenas: Fobos tem 27 km de diâmetro e Deimos , 14 km de comprimento. Além disso, nem redondas elas são NASA/JPL-Caltech/University of Arizona

[{"selector":"#anim-1ddf839b-bfdc-406d-a714-3a2e08401596","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-458ee4e3-6f53-400d-964e-f37daa23ea10","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-04ce6f3e-5f60-40ad-b22b-c1843098cfe8","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-f96eaf3b-484e-426f-bcef-d931d27d6517","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Segundo um estudo recente, “as propriedades espectrais das luas [forma como absorvem a luz] sugerem que elas podem ser asteroides primitivos capturados pelo planeta” NASA/JPL-Caltech/University of Arizona

[{"selector":"#anim-e6b70790-8b3c-472a-97de-ea23f32e66e1","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-850fdc05-99f7-4bc1-a7a2-a25a0984d234","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a30c648a-c0bb-4964-8d83-b68380de219c","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-a6605607-0beb-436b-9f11-b9c5e1918cca","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-38cd1408-bc62-4f32-b49b-fc738c425776 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-7.2443180538221315%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] A equipe de pesquisa usou simulações computacionais para testar as duas principais hipóteses de formação das luas: captura direta e um impacto gigante NASA/JPL-Caltech

[{"selector":"#anim-8c4a987c-968b-4fa9-9980-3119c1e828f2","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4c70acec-9240-4043-bc23-5f95dcc5d1e9","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e92b515b-2ffd-4a67-838b-192404b0cfd2","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-04658ef8-b1aa-425b-b319-564c7fb65728","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Ao final, os cientistas apresentaram uma terceira via: um cenário onde um asteroide, ao passar muito perto de Marte, foi desintegrado pela maré (forças gravitacionais intensas) do planeta NASA/JPL-Caltech/University of Arizona

[{"selector":"#anim-9355b852-4d4d-422e-927a-dc1dd250f72b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d611a926-3f97-4aca-9678-2ef78a5aaca4","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-987abe6b-ea44-45be-adde-8441a321b8bd","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-3bc4a09c-23c5-4264-ba50-4b19eb1b0bea","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Parte dos fragmentos resultantes, propõe o estudo, foi capturado pela gravidade e formou um disco (protossatélite colisional) que, após interações e colisões, resultou em pequenas luas ESA/DLR/FU Berlin

CNNBRASIL.COM.BR

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