So natural disasters caused by alignments of celestial bodies in our galaxy. YOU'RE NOT BEING TOLD!!
Pretend for a moment he's correct. WTF are we insignificant humans supposed to do about the planets aligning? About a comet? About earthquakes or volcanoes? Even if you knew ahead of time about all of this stuff supposedly happening all at once, or in rapid succession, what really can you do? hide in a bomb shelter for hundreds of years?