Katalyst Space Technologies sta preparando un'audace missione di servizio satellitare per sollevare il telescopio spaziale Swift della NASA, ormai datato, in un'orbita più alta prima che rientri nell'atmosfera terrestre. Il veicolo spaziale, ufficialmente chiamato Neil Gehrels Swift Observatory, studia i lampi gamma dal 2004. Se avrà successo, la missione prolungherebbe la vita di uno dei più produttivi osservatori astrofisici della NASA.
Washington, 20 agosto 2026
Katalyst Space Technologies sta preparando una missione di servizio satellitare ad alto rischio, volta a innalzare l'orbita del Neil Gehrels Swift Observatory della NASA, un cacciatore di lampi gamma vecchio di due decenni che sta gradualmente perdendo quota.
Il veicolo spaziale Swift, il cui nome formale è Neil Gehrels Swift Observatory, orbita intorno alla Terra da oltre due decenni, ma la sua deriva naturale lo ha progressivamente avvicinato all'alta atmosfera. Senza un intervento, si prevede che il telescopio effettui un rientro incontrollato nel giro dei prossimi anni, ponendo fine a una missione che ha trasformato la comprensione degli scienziati sulle esplosioni più violente dell'universo. Katalyst Space Technologies, un'azienda privata che collabora con la NASA nell'ambito del servizio satellitare, sta ora preparando un proprio veicolo spaziale per rendezvous con Swift e spingerlo di nuovo in un'orbita più alta.
La missione dipende da un veicolo di servizio compatto chiamato LINK, progettato per avvicinarsi al suo obiettivo, agganciarlo e azionare propulsori in una spinta coordinata. LINK è stato sviluppato nell'ambito di una partnership con la NASA che premia velocità e propensione al rischio, e il prossimo tentativo sarà tra i primi test end-to-end di innalzamento orbitale su un osservatorio scientifico ancora funzionante. Gli ingegneri affermano che la coreografia è delicata: un disallineamento di spinta, tempistica o assetto potrebbe porre fine all'operazione o danneggiare il telescopio.
Katalyst ha inquadrato l'iniziativa sia come servizio pubblico sia come banco di prova. "We took on this high-risk, high-reward challenge and are proud of the milestones we reached along the way. We have already learned a tremendous amount, and now our job is to turn those lessons into something durable — building a repeatable playbook to inform future rendezvous and proximity operations and satellite servicing," ha dichiarato Ghonhee Lee, in rappresentanza dell'azienda. Il team sta usando ciò che ha imparato per affinare le procedure per future operazioni di prossimità.
Per la NASA, la posta in gioco va ben oltre un singolo telescopio. Swift ha accumulato oltre due decenni di scoperte, tra cui le prime osservazioni dei lampi gamma, gli afterglow delle fusioni di stelle di neutroni e la più luminosa esplosione cosmica mai registrata. Prolungarne la vita aggiungerebbe un lungo record di osservazioni senza il costo di costruire e lanciare un sostituto, e dimostrerebbe che gli Stati Uniti sono in grado di effettuare manutenzione sui satelliti in orbita invece di limitarsi a sostituirli.
La missione si inserisce anche in un settore in crescita come quello del servizio in orbita, in cui le aziende agganciano, riforniscono e riposizionano satelliti datati. Un innalzamento orbitale riuscito di Swift rappresenterebbe uno dei primi tentativi di salvare attivamente una missione scientifica che continua a restituire dati, anziché un veicolo spaziale commerciale fuori uso. Sarebbe inoltre una dimostrazione pubblica di tecniche che la NASA, il Dipartimento della Difesa e gli operatori commerciali hanno studiato per decenni.
I pianificatori della missione non hanno ancora annunciato una data di lancio esatta per LINK, ma il veicolo spaziale ha completato i test a terra e si sta preparando per la spedizione al sito di lancio. Se tutto procede come previsto, il lancio avverrà nel giro di poche settimane, con la sequenza di rendezvous e innalzamento orbitale che si svolgerà nei giorni successivi. Gli ingegneri seguiranno in tempo reale le fasi di avvicinamento, cattura e spinta, e il telescopio verrà sospinto delicatamente in un'orbita più stabile.
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