Yes I do know how and why.
In about four or five billion years the sun will exhaust it's supply of fuel (hydrogen) and start consuming helium. It will then become a red giant star and it's diameter will encompass the earth's orbit and consume it also. Of course the oceans and atmosphere will...
That link you provide is from the Philadelphia church of god. They are affiliated with Herbert W. Armstrong an end of times doomsayer. While there may be a few grains of truth in this specific article and the articles in general on the site I would not put any faith in what they say.
I only had to pay $32. Last year I was old enough to be able to take advantage of the "catch up" provision regarding 401k's and deferred an additional $3500 which kept my taxable income down.