I learnt a few new things about No Man Sky today listening to post e3 podcasts. I'm thinking about starting a thread that'll just have all these factoids in one place for convenience sake, if nothing else.

1) The game is more like minecraft than I thought. While you can't build Penis Cathedrals on the planets you discover, there are supposedly millions of combinations of guns/ ships you can build (obviously with combinations of minor tweaks and such).

One example was you could modify your gun to shoot grenades that do indeed let you dig into the earth (up to 120m).

2) You won't know how to build things when the game launches, you'll need to experiment, find blueprints or wait for a wiki.

3) They've created an entirely fictional periodic table.

4) You can find crashed ships on planets. If said ship happens to be better than your own, you can scan it to find out what's wrong with it, gather the materials to repair it, then take it for yourself...

That last point had me creaming in my pants XD