Spacejizz is a fantastical metaphor for the blog postings on spacejizz.com, it indeed, has a very deep meaning.
Origins of the term "spacejizz" can be found as far back as the early years of the internet.
When you attempt to decipher the meaning of "spacejizz" many things come to mind-
The first thing that comes to mind is likely the literal meaning, which would be seamen floating suspended for eternity in outer space.
Bill Clinton-"after ten years of government funded research I still cannot wrap my noggin around the true meaning of spacejizz!"
Hillary Clinton- "Perhaps you should go to spacejizz dot com, smack your turkey around (masturbate) and find out!"