2006-08-31 22:41:54 · 14 answers · asked by tom science 4 in Science & Mathematics ➔ Astronomy & Space
Main sequence stars brighten over their lifetimes. Currently the sun is about 40% more luminous than it was at the time of the Earth's formation. In one billion years (this number is a bit uncertain) ,prior to entering its red giant phase in about 5 billion years, it will be hot enough to evaporate most of the Earth's oceans. This will generate a significant greenhouse effect and water vapor is susceptible to photolysis by UV. The split off hydrogen escapes from the earth leaving it waterless after a few hundred million more years. Sometime around then, life will become very difficult on this planet unless the planet is moved further from the Sun or we erect orbiting sun shields or something.
2006-09-01 05:30:51 · answer #1 · answered by Mr. Quark 5 · 0⤊ 0⤋
The solar receives too warmth in about 3 billion years. The extra pessimistic diagnosis do not account for the Earth climate moderating itself for the duration of its existence span. The dim earth paradox exhibits detrimental feedbacks. the quantity of available albedo probably pushes that to three billion years. If it makes it longer, it will be incinerated through about 5 billion years even as it turns right into a pink commonly used.
2016-12-06 02:22:09 · answer #2 · answered by Anonymous · 0⤊ 0⤋
When the planet ceases to exist
2006-08-31 22:43:58 · answer #3 · answered by witchfromoz2003 6 · 0⤊ 0⤋
probably when the sun nears the end of its life and expands and engulfs the earth. I think in about 3 billion years
2006-08-31 23:30:49 · answer #4 · answered by allblackskikass 2 · 0⤊ 0⤋
when the sun enlarges and becomes a yellow dwarf and sucks in all the planet
2006-08-31 23:36:51 · answer #5 · answered by topgun 2 · 0⤊ 0⤋
when evil has prevailed ..over goodness and
you can count good people on finger tips....
and there are still..good humans in the world..
even ..though there is much too evil...around...but not yet...
2006-08-31 22:47:44 · answer #6 · answered by Anonymous · 0⤊ 0⤋
not soon enough this planet needs to be put of of it's misery
2006-08-31 22:47:43 · answer #7 · answered by Anonymous · 0⤊ 0⤋
About noon next Tuesday. Aren't you feeling sick now?
You just had to ask.........
2006-08-31 22:47:40 · answer #8 · answered by Anonymous · 0⤊ 0⤋
july 8th 2104
2006-08-31 22:47:07 · answer #9 · answered by Jimmy C 2 · 0⤊ 0⤋
10.191 So you still have a few years to worry...or not.
2006-08-31 22:47:16 · answer #10 · answered by Puppy Zwolle 7 · 0⤊ 0⤋