2007-04-01 04:14:21 · 9 answers · asked by burke48186 5 in Science & Mathematics ➔ Astronomy & Space
not really yet...
it fluctuates though...
in time it will in about 5 billion years
2007-04-01 04:18:31 · answer #1 · answered by Justin H 4 · 2⤊ 0⤋
Getting bigger? No. Putting out more heat? Slightly - but definitely not a noticeable amount if you're not studying it every day. It goes through cycles every 11 years where it gets a little tiny bit hotter for a little while, but again, not really noticeable. 5 billion years from now, it will get a LOT bigger. And then we will notice.
2007-04-01 05:03:41 · answer #2 · answered by eri 7 · 0⤊ 0⤋
Not yet, the sun will remain reasonably constant for the next 3 billion years unitll it runs out of Hydrogen and starts fusing Helium causing it to expand.
In terms of solar activity the sun is a period of decline which will become more pronounced towards the end of the decade.
2007-04-01 04:18:53 · answer #3 · answered by Red P 4 · 3⤊ 0⤋
Yes indeed, averaged over time scales of hundreds of millions of years. This is due to solar main sequence evolution. A lucky coincidence is that CO2 levels have been falling steadily too, due to continental growth (a plate tectonic effect; water erosion removes CO2 from the atmosphere). The loss of this greenhouse gas offsets the increasing solar radiation. Aren't we lucky?
Unforturnately, the CO2 concentration is so low now (compared to ancient times) that we're starting to get a diminished return on any future reduction. Earth will be too hot for life in 100-200 million years or so. Better get packing.
2007-04-01 17:26:57 · answer #4 · answered by Dr. R 7 · 1⤊ 0⤋
The sun's not getting any bigger, but measurements have shown that the sun's energy output has been increasing at .05% per decade for the last 30 years.
2007-04-01 04:54:41 · answer #5 · answered by Gene 7 · 1⤊ 0⤋
Yes and no. Over the short term--say a million years--there's no signifigant change. But over a long period of time--a few hundred million or a billion years from now--you'lll see a small but perceptable difference.
2007-04-01 05:22:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋
And it is NOT putting out more heat. The earth is getting hotter from greenhous gases, not the suns' output.
2007-04-01 04:49:35 · answer #7 · answered by Anonymous · 0⤊ 2⤋
No, this will happen when it will be forced to use helium instead of hydrogen, and there are still 5 billion years before this.
2007-04-01 04:32:24 · answer #8 · answered by MadScientist 2 · 1⤊ 0⤋
no, it will get bigger when it becomes a pulsar...long time from now
2007-04-04 18:03:50 · answer #9 · answered by Evie 3 · 0⤊ 0⤋