Week 4 the first reading journal

Giant Sunspot Now Aimed Directly at Earth

http://news.nationalgeographic.com/news/2011/11/111110-sunspots-ar1339-earth-jupiter-solar-flare-auroras-space-science/


Summary

   The huge cluster of magnetic activity on the sun has appeared recently. It is very rare case that the cluster can be seen by naked eyes. The magnetic activity, rotated around the sun, occurs because the difference of temperature between the sun and the clusters. The magnetic fields around the active region emit a large amount of  electromagnetic energy because of their burst. If the magnetic energy enters our atmosphere, it reflects molecules in the atmosphere, and released light. The phenomenon is aurora. Because of the magnetic activity on the sun, we will frequently see aurorae. The situation is good for us, but such a huge energy which was produced from the sun might causes many serious problems to us. The magnetic activity also produces the x-ray. When the x-ray, which is unusual amount in this time, entered into our atmosphere, it prevents to communicate to satellite. In addition, such a large amount of x-ray is worried about the health of commercial pilot and astronauts in the International Space Station. When the sun produces large solar flares, they are forced to expose the large amount of the x-ray, and they have to evacuate the x-ray for at least one minute. The sun has not produce a lot of the x-ray so far, but the situation is still churning up new fields.


My opinion
  I have never considered about the sunspot and aurorae. So, I am surprised that the relationship between the two phenomena. I could acknowledge that the relationship among solar system is really fragile one. I could notice that the Earth is called the miracle planet in solar system. I learned many things from the article.


Vocabularies
1)cluster
Parts of speech
noun
Definition
an organization of the same kind of things, animals, or people
Synonym
assembly, group
My own sentence
The cluster of millions of stars is called galaxy.


2)expose
Parts of speech
verb
Definition
to show something without any protections
Synonym
show, reveal
My own sentence
The murder exposed a dead body to show his cruelty.


3)churn up
Parts of speech
verb(idiom)
Definition
to cause aversion in
Synonym
upset, disturb, shake up
I churn up his mistake because it caused so serious trouble.