Wouldn’t that mission need to have already been in space in 2013 though?

I can just imagine the scientists getting on a Skype call where the mood is roughly analagous to the Chernobyl control centre, debating what would happen if they released the news and a significant portion of the world’s population immediately stopped working either to retire or for other coping mechanisms.

That’s what the scramble would be. Space launches avoid a lot of risk because the missions isn’t worth loss of life. There is also a frugality to it.

That changes the second it comes down to saving millions of life and destruction of the way of life for everyone that survived. Money becomes unlimited and risk of life to save millions is tolerable.

If there was any way to calculate a risk above zero, someone like Musk would be playing it up to get access to that funding.

Money becomes unlimited?

I 100% guarantee people will be arguing over who should pay for it… You will hear " Why should we find a mission to save all human life? Let them pay their fair share too"