If scientists know that the sun is going to eventually die, why aren't they working to prevent its death

Nope ... won't work.

Did you tell them it will die in 5 billion years? And that humans will (assuming we haven't destroyed ourselves) have moved off the planet by then to another planet or planets?

They should not be scared, but amazed ... perhaps enough to study the topic and become scientists when they grow up.

yeah scientists know that the sun is going to die but who in the world will take the risk to go in near the and prevent it's death

Well, unless they're going to live another 4.5 billion years, there really is nothing to worry about.....except that the world is going to end this December, but I probably wouldn't tell them that.

If the sun goes out, we can always relight it with a match.

Well son, the earth will die before the sun does

good luck with that...