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What we know:

The SpainSat NG II mission will launch on Thursday, October 23, from Cape Canaveral’s Space Launch Complex 40. The launch window opens at 9:30 p.m. ET, with a backup launch opportunity set for the following day at the same time.

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SpainSat NG II is the second of two advanced satellites built by Airbus, designed to deliver secure, military-grade communications for the Spanish government and its allies.

The satellite will be placed into a geosynchronous transfer orbit and will work alongside its sister satellite, SpainSat NG I, to replace older communication systems.

What we don't know:

It’s also unclear how long the satellite will take to reach its final operational or

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