Originally posted by Cosmic Cube
Hulk's power and sustenance comes from an extra-dimensional source. It's been established over and over again. Would you like proof?
Yes, actually.
Stop assuming so much, demi. Per fluorocarbon emulsion has nothing to do with the presence of water, or a lack thereof. Perflurocarbon emulsion involves a gas that is not present in water, but in the upper atmosphere. It's nothing like the process of that occurs in a fish's gills. Fish pull oxygen from the water the same way we pull oxygen from the air, except they do so more efficiently. There is no chemical reaction taking place, until the oxygen is metabolized.
I'm afraid you're misunderstanding the entire process, Cosmic. While it's true that perflurocarbon emulsions are made of a greenhouse gas (PFCs), it still needs a supply of oxygen, otherwise it's totally ineffective. In fact, it's so ineffective without a supply of oxygen that it would result in hypoxia without it. Research has shown that ventilating it in a oxygenated liquid (like, say, WATER) helps in a process called PLV - partial liquid ventilation. It allows him to build up oxygen in his lungs, but the emulsion would allow him to convert water into oxygen. THAT'S why it works underwater. THAT'S why it would not work in space. And THAT'S why PAD phrased it as such.
It was speculated that Hulk possessed such a gland. However, it has been established that Hulk draws power from an extra-dimensional source. Speculation or fact? Do I have to ask which is more tentative?
Peter Allen David, the premier WRITER of Hulk for YEARS, wouldn't need to speculate on any of that if it were "already established" that Hulk gets everything from extradimensional sources, now would he? You don't see people speculating on why Juggernaut doesn't need to breathe, right? No. Why? Because the gem protects him. You do read speculation on why Hulk can now breath underwater. Why? Because he hadn't been able to in the past.
So which is more tentative? I'd say this whole "extradimensional source" jargon you're spewing.
Inform me. When has Hulk passed out from a lack of oxygen?
I'll give ya four, because I'm so nice:
1. #470 - Hulk passes out from lack of oxygen
2. Black Bolt fights Hulk, tosses him into a volcano, where Hulk passes out from lack of oxygen in the area
3. Hulk #165. Hulk sits on the ocean floor, but wonders how he's going to live once he runs out of breath. Captain Omen is then nice enough to drop a oxygen helmet down for Hulk, in exchange for Hulk agreeing to help him.
4. Marvel Spotlight #5 - Ghost Rider beats Hulk by surrounding the Hulk with a fire aura, burning the oxygen around him and causing him to suffocate.
There are more, but this will get you started.
He is in orbit. In order to stay in orbit, he would have to maintain orbital velocity, which he cannot do, because he can't fly.
That's why I was asking whether or not he was there for any length of time, if you're up and down, then you've never hit orbit, you've just hit the upper atmosphere. If you've hit orbit, then you're following earth's orbit and going back down like water through a drain. The graphic is inconsistent in its depiction.