I was working at My God, it's full of stars! puzzle, when a sudden realisation came into my head: that I have a friend, who is also an astronaut, and that I have an appointment with him! We were gonna drink tea with crumpets and play board games.

Well, actually the appointment was due about two years ago, but I thought that a true friend would understand me being a little late.

The door to his house was open (that chap is a bit forgetful), and in the room, where we used to play, a lot of things were missing. Well, - I thought - he probably just took all his belongings with him and went for a walk. He surely will be back soon.

But then I saw something terrifying:

Not only did he play Scrabble without me, he also used the word "Jean", which is proper noun, prohibited in the game!

Then I realised that there was something weird here - why would he still leave the game on the table, if we were supposed to play it years ago? I came to a conclusion that he was so bored that went into a long-lasting space-trip, instead of calling me and reminding of our scrabble game!

Well, now I gotta find him. Looking across the place I found two bookmarked books:

Spiral galaxy rules
1) Every galaxy consists of an integer amount of grid-squares.
2) Every galaxy has a center of symmetry.
3) The center of every galaxy is a red star.
4) At every given point in time, galaxies have no common squares.
5) At every given point in time, galaxies tile the universe.
6) That's all.

Safety regulations of space-jumping
1) Place yourself in a place of unstable continuum.
2) Put a towel on your head not to make a mess if it blows up.
3) Aim for the stars.
4) Space-jump.
5) ???
6) Profit.

I didn't get a single word of it, honestly. I remember my dear friend telling, that our planet's continuum is unstable, but I never understood what it really means.

I removed the scrabble pieces and looked at the map underneath.

I was completely lost.

Finally,

I took out my cellphone and decided to give... Wait, what's his name? It was something foreign... I... Well, it seems that I forgot it completely. Now I don't know which number do I call. I could call all of my friends, but that would take eternity. His name was...

So, help me, dear people. What IS his name?

Non-hint:

Hint:

Fat all-solving hint (get your bounty here!)