Re: Semi-OT Earth's five space dooms!

The five dooms are:
1.) Sun blows up. In about 5 billion years or so it gets very big
2.) Sun burns out. In about 7 billion years to white dwarf stage
3.) Rogue star hits Sun. Very long odds on that.
4.) Giant comet hits Earth ("science thinks it unlikely" although of all the scenarios presented, this one seems the most likely in the short run).

That one is the most likely, though the historical record suggests that this doesn't happen all that often. One like that one that hit in Russia a hundred years ago could do significant damage to a small city.
5.) Moon descends, pummels Earth with giant meteorites. Maybe in a few billion years, 1999 notwithstanding.
Bring the kids, they'll love it! :-)
Meanwhile... the threat of Islamo-Terro-Irano-Fascist airliners striking skyscrapers still exists.
Passengers won't sit still for that anymore, Flight 93 and later on passengers have helped crews get misbehaving people under control.
.

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