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  • The fact that 2012, the date 2012, is close to 2014 is completely a coincidence.

  • This up and coming solar cycle, roughly 2014, isn't going to be significantly different from the next one

  • and the next one, and then the previous one.

  • The sun is what we call and active star, and it has a cycle of activity.

  • Over 11 years, we go to higher activity and back down to lower activity.

  • So, this 11 years is fairly steady, and it has been happening through time as far as we can tell.

  • And we always have solar flares. Some times we have big ones, some times we have small ones.

  • We live on a planet with a very thick atmosphere.

  • So, that atmosphere stops all of the harmful radiation that is produced in a solar flare.

  • Even in the largest events that we've seen in the past 10,000 years,

  • we see that the effect is not enough to damage the atmosphere so that we are no longer protected.

  • Coronal mass ejections are happening on the sun all the time.

  • And they hit the Earth once or twice a week,

  • sometimes more,

  • and in general, the effects are minimal.

  • If we have a really big one, we can have a really strong aurora.

  • But, then it can effect satellites and power grids,

  • and these are the kinds of things that people who run these systems know about.

  • And we have warning.

  • These CMEs travel at speeds that mean they take probably 2-3 days to get here.

  • We've learned more and more about storms.

  • We've learned how to better predict the effects.

  • Where they are going to go. Where they are going to hit.

  • As long as we continue paying attention to it and learning more about it,

  • treating it like we treat a hurricane coming or a huge thunderstorm coming,

  • we can take appropriate measures to prepare for them.

  • We understand the sun well enough

  • with all the technology and all the science

  • and all of the many spacecraft we have that are monitoring it 24 hours a day,

  • 7 days a week, to know that this stuper storm that's going to wipe out the Earth simply isn't going to happen.

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NASA|2012年の真実 - 太陽の嵐 (NASA | The Truth about 2012 - Solar Storms)

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    ivanmis に公開 2021 年 01 月 14 日
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