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“OSIRIS-REx” prelevò, dalla superficie dell’asteroide “Bennu”, dei campioni di materiale

il 21 ottobre del 2020, la sonda della NASA “OSIRIS-REx” prelevò, dalla superficie dell’asteroide “Bennu”, dei campioni di materiale da riportare sulla Terra. La capsula con il prezioso carico è rientrata con successo il 24 settembre del 2023.Atterrare su un asteroide di soli 490 metri di diametro non fu affatto una semplice impresa

Con il suo braccio robotico prelevò un campione di polvere dell’asteroide che ci permetterà analisi dirette di incredibile interesse. Asteroidi come Bennu custodiscono le informazioni del sistema solare primordiale ma non solo: Bennu è ricco di composti del carbonio, l’elemento sul quale si basa la vita come noi la conosciamo. Un oggetto come Bennu, precipitando sulla Terra primordiale, potrebbe aver dato origine ai processi che hanno dato vita ai primi microorganismi! Queste importanti informazioni si andranno ad aggiungere a quelle già in nostro possesso derivanti da altre missioni spaziali come la missione Rosetta che ha confermato la presenza di aminoacidi sulle comete!EGITTO E ASTRONOMIA: Il nome della sonda è un acronimo (Origins, Spectral Interpretation, Resource Identification, Security – Regolith Explorer); la sua meta, l’asteroide 101955 Bennu, s’ispira all’uccello-Bennu, la “fenice” che rinasceva dalle proprie ceneri e nella mitologia egizia era simbolo di creazione primordiale. La denominazione è stata ideata da uno studente delle elementari che vinse il concorso “Name That Asteroid!” grazie al collegamento tra il significato dell’animale mitologico e il possibile ruolo degli asteroidi come veicoli della vita.

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