Is it true that the Sun's 'intensity' has increased and may be contributing to our Climate Change?

Question

I've heard that most climatic models assume the Sun's output to be steady and don't take into account otherwise. Could there be more to a star's life cycles than we currently know about and what could this mean for life on Earth?

Answer 1

When the Earth formed, the sun's output was about 30% less than it is today. As Sol evolves, it's output will continue to increase and by about 1 billion years from now, Earth will receive about 10% more solar radiation than now. This is all due to the natural aging of a perfectly normal star.

SO, we better get working on that (VERY large) sunshade to put in orbit; perhaps a debris ring similar to Saturn's from some tiny asteroids would do the trick? And one around Venus also so we can cool her down to a habitable temperature.

Answer 2

Finally someone asks an intelligent question. With all the hysterical B.S. about global warming going around, for some strange reason no one ever thinks about the one and only source of warmth on earth or any other planet -the Sun- it has been known for quite a while now that the Sun has cycles of more and less output. Right now we are in a warming period. In 20 or 30 years, when things cool down again all the chicken littles will be screaming about the coming ice age, just as they did in the 60s. Big headlines World doomed, coming cold may wipe out humanity. Relax and enjoy the warm weather.

Answer 3

Yes in fact. Scientists have assumed that this how super novas are formed. The sun grows gradually over A LOT of time. It becomes bigger, producing more radiation, and heat for us. It will get so big that we will no longer be able to handle the heat, unless we evolve once more in that short period and are able to handle tempuratures above 200 degrees C. The sun will grow, wiping out every planet except for Mars since Mars is technically a dead planet that was once full of life (or so we believe) like Earth. It will become a red giant and basically "swallow" our solar system. No more Earth, we predict this will occur around 3036 or 3037. A star after becoming so large (like Arcturus) that it clears everything around it. After about 10 billion years of growing into such an immense size, it implodes. This implosion creates a supernova. Supernovas either produce nebulas, blackholes, or white giants. So a stars' life cycle, espicially the Suns, is critical to things around it.

Answer 4

Actually the amount of sun spots correlate with the Earth's temperature. Whenever there is more sunspots like now, the temperature on Earth is much higher. So yes the intensity has increased.