I dare say that creating a rocket and fuel to launch tones of stuff far enough into space to reach an asteroid is going to be pretty rough on the local environment.
Don't forget that after a handful of mission to metal-rich asteroids and water-rich asteroids, you have all the materials needed to assemble further missions in orbit. Much cheaper than lofting all that stuff out of Earth's gravity well.
Some UK reports suggest that the 'scientists' and 'tourists' on this ship were ecofreaks seeking publicity to show that some previous explorer's route had become eco-wickedly ice-free. So... they got stuck in 'unforseen' thick ice. And so did their rescuers. And then they were evacuated thanks to an awful lot of gas-guzzling machinery - and still (today) can't leave the area. In the UK, we really do enjoy a good joke like this.
I'd advise you to stop reading the Daily Mail.
so I'd be surprised if any browsers or servers used it as the random number source
It was recently discovered that the implementation of Dual_EC-DBRG in OpenSSL is flawed. Hard-crashes flawed. In a totally unusable state flawed. This was only just recently discovered because nobody actually used it.
Encrypt [...] your wallet.dat
And for goodness sake write down your password somewhere. Or you end up with a wallet full of a handful of bitcoins you acquired ages ago but now can't do anything with.
Can I expect to be able to access my collection of e-books in 40 years?
Unless you're foolish enough to lock yourself into DRM, I don't see why not. Nearly 30 years on (well, 28) and Amiga software can be run in emulators from discs that have been format-shifted. And Amiga-specific files can and have easily been converted to new formats. Except for regular old text, because that still works fine. Or HTML, because that still works fine. Or BMP, because that still worms fine.
If a format works and does it's job, it'll stick around after many hardware and software changes. Calibre already makes it trivial to move between epub and mobipocket (and go to and from RTF, PDF, etc) so I don't see you suddenly being unable to read your library even in 40 years.
For every complex problem, there is a solution that is simple, neat, and wrong. -- H. L. Mencken