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This long-term data storage will last 14 billion years
(www.theregister.com)
This is a most excellent place for technology news and articles.
I don't see how that's relevant here.
If his eyes were sending out rays, they did go out into space.
But that's not actually how it works. Although it is how it works in video games (raytracing).
I think it is just a fun way of thinking about it.
In reality, things from space were travelling to earth to interact with Galileo's retina.