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Un "sussulto" su Marte è stato rilevato per la prima volta dalla sonda Insight della NASA: il suo segnale debole ma distinto, registrato lo scorso 6 aprile dal sismometro SEIS, potrebbe rappresentare il primo sisma marziano mai osservato.
A darne notizia è l'agenzia spaziale francese CNES che gestisce lo strumento. "Abbiamo aspettato il nostro primo sisma marziano per mesi", dice Philippe Lognonne, ricercatore all'Istituto di fisica del globo a Parigi. "È così emozionante avere finalmente la prova che Marte è ancora sismicamente attivo. Non vediamo l'ora di condividere risultati dettagliati una volta che avremo studiato meglio l'evento e fatto un modello con i nostri dati", ha aggiunto.
I ricercatori stanno cercando di verificare l'origine del tremore marziano, per assicurarsi che venga dall'interno del pianeta e non sia causato dal vento o altre interferenze. Se confermato, annuncia Bruce Banerdt della NASA, "segnerebbe la nascita di una nuova disciplina: la sismologia marziana".
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