Posted on 05/03/2020 6:59:35 AM PDT by BenLurkin
The extent to which solar activity...varies can be reconstructed using various methods — at least for a certain period of time. Since 1610, for example, there have been reliable records of sunspots covering the Sun; the distribution of radioactive varieties of carbon and beryllium in tree rings and ice cores allows us to draw conclusions about the level of solar activity over the past 9000 years. For this period of time, scientists find regularly recurring fluctuations of comparable strength as during recent decades.
A comprehensive catalog containing the rotation periods of thousands of stars has been available only for the last few years. It is based on measurement data from NASA’s Kepler Space Telescope, which recorded the brightness fluctuations of approximately 150000 main sequence stars (those that are in the middle of their lifetimes) from 2009 to 2013. The researchers scoured this huge sample and selected those stars that rotate once around their own axis within 20 to 30 days. The Sun needs about 24.5 days for this. The researchers were able to further narrow down this sample by using data from the European Gaia Space Telescope. In the end, 369 stars remained, which also resemble the Sun in other fundamental properties.
The exact analysis of the brightness variations of these stars from 2009 to 2013 reveals a clear picture. While between active and inactive phases solar irradiance fluctuated on average by just 0.07 percent, other stars showed much larger variation. Their fluctuations were typically about five times as strong.
For the foreseeable future, there is no indication of such solar “hyperactivity.” ... For the last decade, the Sun has been showing itself to be rather weakly active, even by its own low standards. Predictions of activity for the next eleven years indicate that this will not change soon
(Excerpt) Read more at scitechdaily.com ...
ping
Here comes the hugh cool. Series doesn’t begin to explain
Weak? When in AZ the temps are around 100F?
This would mean that our star has been unusually feeble over the past 9000 years
Once again, we’re all gonna die. But can we keep going for at least another 11.x years? (AOC says we have that much time. What exactly does she know?)
Actually, that says we’re not all gonna die. We evidently have a remarkably stable heat source.
Sooo....unusually weak the last 9000 years...did we get the glacial periods during the more active times....seems counterintuitive....
So...am I going to die before noon today...or what???
Down to about 10.75 years. Doomsday is January 22, 2031.
Predictions of activity for the next eleven years indicate that this will not change soon.
Then again...
Just one more way in which God fine-tuned the solar system for our benefit.
So let us take full advantage of our stable Sun by spending our days honoring the One who created everything.
Not really! Active at least to me means more solar flares which means more charged particles hitting the earth’s atmosphere which means increased cloud cover therefore increased potential for cooling events. All subject to being made stronger or weaker effect by fluctuations in the earth’s magnetic field. Cloud cover can also be enhanced by any volcanic activity which also increases and decreases aperiodically over time. Have a big flare with a minimum earth magnetic field and jump in volcanic activity all at the same time and you might have cooling event worth writing home a out!
From the graphs in the article it looks like they show about ten cycles per year, but that could be driven by the sampling rate. So this is week to week changes rather than year to year.
For the Earth, the relation between small changes in solar brightness and temperature is about 1%=0.7°C. Reference: http://www.astronomynotes.com/solarsys/s3c.htm. Temperature is proportional to the 4th root of solar luminosity, so changing from 1.00 to 1.01 times the normal amount results in a factor of 1.0025. Multiply by the Earth's average temperature of 288K (15°C) and you get 288.7K (15.7°C)
The word normally translated as create in English in Genesis 1 is really for prepare, as in making something from something on hand, adjusting it for a purpose.
As such preparing the greater and lesser lights could indicate modifying something previously created.
... and here we have our temperate, stable and therefore a bit weird Sun...
I'm thinking climate change here, since I think it is proven science that the sun has the greatest impact on the earth's climate. So 0.07% is the average, and it is pretty tight - well maybe. What is range between +/- 1 sd? Also consider that magnitude associated with active and inactive phases. 1.3 million earths fit within the volume of the sun.
bttt
It’s all relative. If it were just say 25% stronger we’re all fried.
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