Terrifying simulation shows what would happen to a human body in space without a spacesuit

There's clearly a reason people wear spacesuits when they go into space and, well, a YouTube video has proven just how crucial an item they really are.

While you may've gotten away with wearing the wrong sort of trainers if you forgot yours on sports day, or still been able to go swimming in shorts if you forgot your swim costume, the same certainly can't be said when it comes to hopping into a spacecraft and heading into outer space.

Granted, NASA nor any other major space agency would ever send someone up to do things in space without a spacesuit however, if you had ever wondered what could happen to an astronaut should they enter space without a specially designed fit?

Well, it's not pretty.

If you fancy going up into space, you'll definitely need one of these... (Getty Stock Image)

A video created by DG EYE science on YouTube shows the scary details of what would happen if you’re ‘accidentally thrown out of your spacesuit’.

Not a really relatable situation for most of us, but it's quite interesting as it’s not what you might expect - although, you would definitely die.

The video explicitly said you wouldn't explode, so you can throw that concern out the window (or airlock).

But depending on how you feel about your death, you might actually prefer it.

Rather, in the first few seconds, the gases in your body ‘will start to expand’ and the air in your lungs ‘will cause your lung tissue to rupture’.

A situation you hope to never EVER be in (YouTube/@dgeye)

Then, within five seconds, the ‘water on the surface of eyes, skin and mouth’ start to evaporate, and the water in your blood ‘starts to boil’.

The simulation then shows the body swelling and becoming bigger, almost like a big human balloon, as the skin ‘is elastic and strong enough to withstand pressure’.

Then, after blacking out, the heart eventually ‘slows down and stops’ before you would 'die of asphyxiation', with the video showing the body turning grey.

According to Popular Science, an astronaut who is exposed to a space vacuum would experience their blood vaporising, along with the water in their body, in just 10 seconds.

The body begins to expand (YouTube/@dgeye)

They would then lose consciousness in 15 seconds as their body expands and lungs collapse.

The unlucky astronaut would be paralysed, or more likely dead, in 30 seconds, most likely dying of asphyxiation or decompression.

As one user commented: "Enlargement of body parts? Say no more."

"Props to the guy who went to space for us to know all this," another added.

If you’d like to see more of these terrifying simulation videos, there’s also a clip showing the gory details of what would happen if you were to fall into a jet airplane engine.

The freak accident ordeal begins with a human figure being sucked into the engine before quickly disintegrating into small red particles – like you’ve dropped a big tomato into a food processor.

Unsurprisingly, the close-up shots show just how fast death would arrive for the unlucky victim, as there really isn’t much left of the animation within a couple of seconds.

Happy thoughts, happy thoughts...