True but; as long as its shields/blast armor is up and it is in a safe portion of space (in a star system where not much is happening so its "safe" from cosmic rays and massive celestial impactors) It should not corrode or fall apart. Its powersupply and shields WOULD eventually run out; For the alloys it is made of to degrade tho we are talking millions to billions of years. (Space is vast; its not largely empty but EVERYTHING in it is extremely FAR apart. They have estimated the voyager 1&2 space probes WILL last 1-3 BILLION YEARS before they fall apart and they ARE NOT SHIELDED OR ARMORED)