Yes, true, damage done. But you asked, and looking at it I'm getting a very strong feeling that this thread is heading into rule infraction territory.

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I say there is an invisible elf in my backyard. How do you prove that I am wrong?

Disclaimer: Avatar is not an official NASA image and does not imply any specific interplanetary or interstellar capability.

The Leif Ericson Cruiser

Oh, all right Mr. Party-Pooper. (Oops - just can't help myself.)

It could be worse, we could be quoting Larry Niven on the subject of Superman...

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

He wears a special oxygen mask created by the Omega Men. He used it to rescue a Sojourner-type Mars rover once, according to the Ultimate Guide.
Maybe the neutrinos are what power him.
Yellow light comes out of the sun, but it combines with the other colors to make white light, so he's near a cosmic source of white.
At least I think so. I can't speak for Disinformed Comics.

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"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek
"Carl Sagan sent a message to ET,
Neil Armstrong walked in the Sea of Tranquility
Steve Squyers built Spirit and Opportunity
Dan Haylen upchucked in zero gravity." -Brent Simon, The Space Camp Song

That's the current incarnation of Supes (the post-Crisis one), although I think it's outdated now; he developed the power to internally process oxygen, using a method taught to him by --IIRC-- Mongul, the son of one of his enemies. Thus he can stay in space nearly indefinitely.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

I'm pretty sure once something leaves Superrman's body, it becomes just normal matter; otherwise you'd see him always surrounded by clouds of indestructable skin flakes.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Don't start!

What! I said skin flakes! That's inside the rules!

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Hmmh---I don't ever recall Kent/Superman eating or drinking anything...

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Man of Steel, Woman of Kleenex. I was just thinking I need to go look for that.

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Cum catapultae proscribeantur tum soli proscripti catapultas habeant.

In Superman Returns, Clark Kent is drinking a beer? at the bar with Jimmie Olsen. Interesting trivia: The actor Jack Larsen is the bartender - he played Jimmie Olsen back in the 50s TV show.

Over the years and various interpretations of Superman, his physical needs have varied greatly. Sometimes he never needs to; other times he has more endurance than a human, but still needs some food and water. Depends more on the writer and the time period you're talking about. That's not counting, of course, the variations in the comic/TV/cartoon/movie versions.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

I'm more amazed that there was parallel evolution on two worlds.

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Fields of Space

LOGIC, n.
The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.

In the Year 2525.

"One small step for (a) man. One giant leap for mankind".

If an astronaut doesn't need good grammar, niether does you.

Host of Seraphim

Yeah. That is quite a coincidence.

Where the heck was Krypton anyhow?

The movies version was twelve galaxies away. The Silver Age Krypton was on the other side of our galaxy. The current canon puts it some 25 lightyears from Earth.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Certain writers have implied that it's not a coincidence. There are also other human-looking or near-human aliens in the DC universe, and it's sometimes implied that they're all somehow connected to the original (2 billion year old) humanoids, the Oans, who founded the Green Lantern Corp among other things.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Depictions of same are woefully lacking in any of the interpretations---comic books, TV, movies--- tho. (Didn't see Superman Returns; IMDb mentions the bar scene with Jimmy drinking beer, but makes no mention of Clark doing same; does the scene actually show him drinking?)

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In the comics, he was once self-exiled from Earth for several weeks, and described being "lightheaded from hunger" before finding a planet with food he could eat. (This was late-80s/early 90s, not long after John Byrne's reboot; at this point his powers had been rewritten as less "all-powerful" and he required both his air mask, and a hyperspace jump belt in order to roam the stars). There have been scenes from various comics in which he is shown eating or thinking about hunger, both as Superboy and as an adult, but with nearly 7 decades of comics and other media, I don't know how to find them.

EDIT: I just thought of one. In the Kingdom Come miniseries, he eats at the "Planet Krypton" restaurant with Batman and Wonder Woman.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

Hmm, thought of another food-related story, this one from Superboy in the mid 70s. His mothers' garden tomatoes had gotten infected with a disease from a red-sun world, and every time he ate tomato soup made with it, he would weaken. Prior to finding the cause of his problem, he said or implied something to his mother about not really needing to eat, to which the inimitable Martha Kent replied, "Nonsense, everyone needs a good hearty bowl of soup every now and then!" or words to that effect.

This was from the Pre-Crisis timeline, so it wouldn't apply to the modern Superman.

Amazing what memory dredges up after such a long time.

__________________
"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort