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На поверхности древних астероидов могли образовываться вулканы

Космическое агенство NASA намерено начать изучение металлического астероида Психея — для этого будет использована межпланетная станция «Psyche», запуск которой запланирован на октябрь 2023 года. В ходе подготовки к миссии планетологи из Калифорнийского университета в Санта-Круз выяснили, что древние металлические астероиды могли иметь вулканические свойства. Дело в том, что в те времена они имели настолько тонкую оболочку, что находящееся внутри расплавленное железо могло со взрывом вырываться наружу.

На поверхности древних астероидов могли образовываться вулканы

Известно, что металлические астероиды начали образовываться в самые ранние годы формирования Солнечной системы. Предполагается, что изначально они представляли собой плавающие в космосе сгустки расплавленного железа, но со временем они начали охлаждаться и обрастать твердой оболочкой. При этом жидкое железо явно пыталось пробиться наружу и оказывало давление на металлическую корочку.

На поверхности древних астероидов могли образовываться вулканы

Астероид Психея

Вулканическими свойствами могли обладать далеко не все астероиды из металла. Дело в том, что некоторые из них затвердевали от середины, в то время как другие начинали твердеть снаружи. Именно последние в конечном счете и оказывались способными к извержению горячих сгустков. Примечательно, если астероид состоял из чистого железа, то горячая жидкость могла просто растекаться по твердой оболочке. Если же в состав входили газы и другие соединения, то извержение сопровождалось взрывом.

Миссия по изучению магнитных свойств Психеи входит в наш список космических проектов, заслуживающих внимания. Рекомендуем к прочтению, и предлагаем вам обсудить их в нашем Telegram-чате, где всегда есть с кем пообщаться на тему науки и технологий!

Источник: hi-news.ru

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