somebody can tell me if every planet will be 13xMega if i use the hyper terraforming device? it matter the tipe and size of the planet?

That is correct. I would suggest finding one that no one has previously scanned (use a flux probe).

It does not; any planet you use the device on will have those stats, even if its stats were higher (such as being Very Massive). I believe they will also retain any passive bonuses they have, and any buildings will stay, in the same state they are in, so you can have a Convoy Heat Seeker or Permafrost Sub-Network with the double effect (I went with having a double-effect Heat Seeker, but mostly because I'd already used them all). I've heard somebody mention the possibility of using all the space on a Very Massive planet, and then the structures will stay even though the planet shrinks. I wouldn't say it's worth the bother, considering you're going to want to put artifact buildings on it as you get them, but it is a possibility.

This section is for suggestion and ideas, not for asking question. I know your all gonna get troll me for doing writing this post but someone gotta say it.

i was just thinking that... this belongs in the beginners hub, and has been asked by many people, including me.

They hyper terraformer device can shrink a planet?!?!?

I believe so.

I have heard this as well, but at the moment I can't recall where...

Yes, I've heard it, and Matress_of_Evil put it in the wiki, and it seems true: the Hyper Terraforming Device gives a planet those specific stats no matter what the stats were before, so it makes the planet massive whether the planet was tiny or very massive.

Be just as well using this on a crappy planet you have in your database that's not been scanned by anyone. That's what i personally did.. no regrets so far ^^

The 10k passive bonuses essentially make the planet untakable as well which is pretty awesome

Can it be boosted to a V Massive with a quasi?

Yes. And to 15x with extra terraformers.

I can confirm that it does indeed shrink a planet; this happened to me.

I updated the wiki to include this information.