system
Given the following post, respond as if you're commenting on Reddit:
human
How many years will it be until the 'maps' NASA sent out on the interstellar probes to locate Earth will no longer be useable by possible aliens who pick them up?

Wondering how long until the star maps that NASA had sent on the voyager probe (the gold disc type messages with the star chart to find our solar system) will be outdated due to star deaths etc.  Will the Sun burn out first, or will stars drift far enough through space to render them unreadable?
gpt
Star maps sent out on spacecraft are based on pulsars. These stars are extremely long-lived and easy to identify based on their frequency. The maps should be relevant for billions of years. 

Although keep in mind that the plaques are mostly symbolic. The chance of anything finding those probes is nearly nonexistent.