I gotta go with the asteroid impact mainly because of the likely reactions of earthly powers.
The US will want to blow it up.
Russia will want to annex the eastern part of it.
China will try to buy it.
The E.U. will offer it asylum and welfare.
And Texas will declare it a government plot.
We'll still be arguing when it hits.
The US will want to blow it up.
Russia will want to annex the eastern part of it.
China will try to buy it.
The E.U. will offer it asylum and welfare.
And Texas will declare it a government plot.
We'll still be arguing when it hits.