What would happen if you were in space with no gear?

In a vacuum, the only way to lose heat is by radiation (which occurs very slowly for a relatively cool object like a human body) or by evaporation of fluid. You would still die of course, but it would be by asphyxiation. Your blood holds enough oxygen for about 15 seconds of brain activity.

Could you survive in space for a few seconds?

You wouldn’t lose consciousness straight away; it might take up to 15 seconds as your body uses up the remaining oxygen reserves from your bloodstream, and — if you don’t hold your breath — you could perhaps survive for as long as two minutes without permanent injury.

What happens if you take your helmet off in space for a second?

When the astronaut removes his helmet, the vacuum would pull all the air out of the astronaut’s body and he would be completely out of the air in just a few seconds. In a maximum of 45 seconds, the astronaut would faint, and in about one or two minutes the astronaut would die a very painful death.

What would happen if you went to outer space without a spacesuit?

Image source: Wikimedia commons Without your spacesuit, you’d either freeze or instantly turn into a carbon brick, depending on which side of the planet you were standing on. If you were to venture there without any gear, you would survive for less than 2 minutes, provided that you held your breath!

What would happen if you were left in space for 2 minutes?

Oh, and a bonus nasty sunburn from all that raw unfiltered UV radiation. But that’s survivable, if a bit uncomfortable. Unfortunately, if you’re left in space past the 2-minute mark, all your other organs will have to shut down from the lack of oxygen too, which in medical circles is called “dead.” And for Armstrong’s sake, do not hold your breath.

What happens if you hold your breath in space without a suit?

The situation in space is a little different than here on Earth due to the lack of outside pressure, and if you held your breath in space without a suit you’d be in a big trouble. This is because any remaining air would rapidly expand, rupturing the lungs. After losing consciousness, you’ll probably last a couple of minutes maximum before you die.

How long can a human stay conscious in space?

If you ever find yourself exposed to the near vacuum of space, so long as you don’t try to hold your breath, which would result in your lungs rupturing and thus pretty well guaranteed that the incident would be fatal, you’ll likely remain conscious for about 10-15 seconds, with perhaps half that being useful consciousness.