First off, that cover is just fantastic.
I like decaying orbit as a ticking clock. Nice and scary for the players and it's a doom that can't be bargained with.
The actual adventure having a page width two pages wide makes for some very wide paragraphs and it makes it harder to parse, especially at the table. I like the experiment, but I would probably reformat into two columns.
The map reminds me of the graphics on the old Hitchhikers Guide to the Galaxy show on BBC, which is fantastic.
This is a good adventure and I think reformatting it a bit would really elevate it.