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Old 07-06-2017, 11:58 PM
 
Location: Richmond
1,628 posts, read 869,295 times
Reputation: 1744

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I am not sure I follow this:


https://www.yahoo.com/news/m/5cd26e2...quiet-and.html


The part I am confused about, if the SUN is getting quiet, why is bad news.
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Old 07-07-2017, 10:00 AM
 
22,779 posts, read 17,257,359 times
Reputation: 9491
Quote:
Originally Posted by rigby06 View Post
I am not sure I follow this:


https://www.yahoo.com/news/m/5cd26e2...quiet-and.html


The part I am confused about, if the SUN is getting quiet, why is bad news.
Well, first of all, the sun goes through regular 11 year cycles in which it increases and decreases activity. During a solar minimum when the sun is less active, the solar wind, that is, the stream of charged particles that the sun emits diminishes. The solar wind helps to keep cosmic radiation from deep space from reaching the inner solar system and earth. When the solar wind lessens, this allows more cosmic radiation from deep space to reach the earth. Of course, the sun itself also produces cosmic rays.

The earth's magnetic field and the ozone layer of our atmosphere protects us from much of this cosmic radiation. Changes in the earth's atmosphere, such as the destruction of much of the ozone layer allows more of the radiation to reach the ground. This radiation of course is can cause damage to DNA and so is dangerous to life. Cosmic radiation can also damage satellites in orbit.

This statement in the article, ''The sun might soon batter us with a shower of deep space rays so intense, it could cause part of our atmosphere to collapse.'' is a bit misleading, in that it is not the sun that batters us with deep space rays, but that when the sun is 'quiet' there is less solar wind to minimize the amount of deep space radiation that reaches the inner solar system and earth. On the other hand, as stated, the sun itself also emits cosmic radiation, but that is near space relatively speaking, not deep space.

This statement from Elsworth that strange things are going on with the sun and that it is not how it used to be, is interesting.
''Elsworth reckons it will be 2019 before we reach the peak minimum, but that we’re already seeing strange things going on with our star.

In her recently published study of the sun, she wrote: “This is not how it used to be and the rotation rate [of the sun] has slowed a bit at latitudes around about 60 degrees.

“We are not quite sure what the consequences of this will be but it’s clear that we are in unusual times.” ''
The sun does not rotate as a solid body, but rather, different parts of the sun rotate at their own rates. It's curious why the sun's rate of rotation at 60 degrees of latitude has slowed a bit.
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Old 07-07-2017, 03:28 PM
 
Location: Richmond
1,628 posts, read 869,295 times
Reputation: 1744
Quote:
Originally Posted by Mike555 View Post
Well, first of all, the sun goes through regular 11 year cycles in which it increases and decreases activity. During a solar minimum when the sun is less active, the solar wind, that is, the stream of charged particles that the sun emits diminishes. The solar wind helps to keep cosmic radiation from deep space from reaching the inner solar system and earth. When the solar wind lessens, this allows more cosmic radiation from deep space to reach the earth. Of course, the sun itself also produces cosmic rays.

The earth's magnetic field and the ozone layer of our atmosphere protects us from much of this cosmic radiation. Changes in the earth's atmosphere, such as the destruction of much of the ozone layer allows more of the radiation to reach the ground. This radiation of course is can cause damage to DNA and so is dangerous to life. Cosmic radiation can also damage satellites in orbit.

This statement in the article, ''The sun might soon batter us with a shower of deep space rays so intense, it could cause part of our atmosphere to collapse.'' is a bit misleading, in that it is not the sun that batters us with deep space rays, but that when the sun is 'quiet' there is less solar wind to minimize the amount of deep space radiation that reaches the inner solar system and earth. On the other hand, as stated, the sun itself also emits cosmic radiation, but that is near space relatively speaking, not deep space.

This statement from Elsworth that strange things are going on with the sun and that it is not how it used to be, is interesting.
''Elsworth reckons it will be 2019 before we reach the peak minimum, but that we’re already seeing strange things going on with our star.

In her recently published study of the sun, she wrote: “This is not how it used to be and the rotation rate [of the sun] has slowed a bit at latitudes around about 60 degrees.

“We are not quite sure what the consequences of this will be but it’s clear that we are in unusual times.” ''
The sun does not rotate as a solid body, but rather, different parts of the sun rotate at their own rates. It's curious why the sun's rate of rotation at 60 degrees of latitude has slowed a bit.

Thanks Mike


I have a better understanding of this.
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Old 07-07-2017, 04:41 PM
 
22,779 posts, read 17,257,359 times
Reputation: 9491
Quote:
Originally Posted by rigby06 View Post
Thanks Mike


I have a better understanding of this.
You're welcome.
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Old 07-09-2017, 08:12 AM
 
Location: Type 0.7 Kardashev
10,576 posts, read 7,457,429 times
Reputation: 37532
Quote:
Originally Posted by rigby06 View Post
I am not sure I follow this:

https://www.yahoo.com/news/m/5cd26e2...quiet-and.html

The part I am confused about, if the SUN is getting quiet, why is bad news.
Because the New York Post wants to sell copies and generate clicks.

The key line from this story:
Quote:
This led scientists to believe that it’s nearing a tumultuous period not seen since 2008.
Hold onto your hats! Remember the terrible solar chaos of nine years ago?

Wait. No one does. Because there wasn't any.
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