20-15, astronaut dreams

from XV – Breaking Bad Lyrics on Rap Genius

Meaning

This is a reference to his song 2015 in which he talks about how the year 2015 will be the year of the Squarians. In the song, the hook says:

Look up in the sky and I’ll promise
You’ll see a bunch of L7's
About as high as the heavens.

https://twitter.com/XtotheV/statuses/418952229790302208

Astronaut dream is a phrase he uses to describe a far away goal that one wants to achieve. Or a seemingly impossible dream that can’t be reached.

That’s an astronaut dream

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