Are you saying... radiation? Space? I like this idea! It would make my space ship RPG (on the way) a lot more realistic.
Well, you can make your own versions of it, each with their own message for the victim.
Like I have 2 types for my map. One does 25% damage per second and when it kills a player it says "%client got imolated in the sun" and I have another that says "%client drifted off into space".
You can set how much damage (percentage) it does per second inside the game. So you could make a player last one second or an hour depending on what you want. Only real limitation is that it does damage over time so you almost constantly get the "Ouch" signa and sound. That can a be a good or bad thing.
I will try and include a README with it so you will know what to do. Just have to wait for space map.