If you cut yourself in outer space, do you bleed blue?

Question

since blood is actually blue and turns red with oxygen and there isn't any oxygen in outerspace, right?

Answer 1

 SNOOP DOGG

Answer 2

The first three are correct, blood is red, and dark red. No blue.

But if you did cut yourself in space what would happen? Well, being in a low-pressure environment (I hear space is a bit less pressurized than Earth's atmosphere), any liquids in your body would find themselves above the boiling point. Meaning? All of your liquids would boil away. The saliva on your tongue, boiling at an increasingly dropping temperature as you lose heat unto the cold harshness of space. Blood in your capillaries also boil, expanding, causing those pretty little capillaries in your flesh to burst, causing some blood to leak into space through your quickly drying, whithering skin.

And so you decide to cut yourself? Um.. okay...

Radiation already splicing your DNA, your lungs heavily damaged from the air within trying to free itself and become one with the emptiness around you, you grab your knife and prepare to end it all. You slice into your arm, finding the experience very easy, considering your flesh has lost its ability to sustain itself. Severing an artery, the red crimson rushes out, not as a liquid, but as a soggy gas as it continues to evaporate.

But you better do all of this in about 30-40 seconds, or else you'll be killed just by being unprotected in space anyway.

Answer 3

No.  Despite what you might have learned somewhere, you have no blue blood in your body.  Non-oxygenated blood is a dark red colors.  Refraction of the light passing through your veins makes it appear blue, but none of your blood is actually blue.

Answer 4

The difference in pressure between inside your body and space, would act like a vacuum cleaner and suck out the blood from your body.  You'd probably be already dead though.

I don't know what colour.

Answer 5

RED.

Answer 6

Blood is always red.

If you were able to cut yourself in open space your blood would actually boil instantly in the lack of pressure. .

Answer 7

blood is NOT blue

The blue color is from refraction of light as the light bounces off the blood vessels under your skin

"Veins in the skin appear blue for a variety of reasons only weakly dependent on the color of the blood. Light scattering in the skin, and the visual processing of color play roles as well.[17]"

http://en.wikipedia.org/wiki/Blood

Answer 8

well no. blood is actually a darker red when it is not oxygenated, as the other posters have already explained.

but that is pretty much irrelevant because before your blood could even become visible it would boil. boiling point depends more on atmospheric pressure than on temperature. the pressure determines the temperature. so much that with a very simple vacuum sealed jar high school students are able to watch water boil at 77 C. space is nearly a perfect vacuum (atoms wise, theres other particles in there, but i wont address those) so your blood would boil at extremely low temperatures. a lot less than 98.6 degrees.