10. Comet and Meteor Shower

Leonid meteor shower of 1866 large meteor shower legendary, and 1833. I appeared thousands of meteors per hour.

    When do you look at the night sky? Perhaps, it's when celestial event occurred. Comet or meteor shower's a very grand event. And it is even artistic. People to set wallpaper on the computer a picture of meteor would also be large. In most cases, we can enjoy the celestial show without special equipment. 

    Comet's celestial body going through the night sky while pulling the tail. It's like a snow ball that was dirty. They begin to evaporate in the vicinity of the sun. So we can be observed that gas as the tail from the earth. In addition, the meteor is generated from comet often. Comet're moving through space while leaving the dust. Earth approaches the group of those dust, and the dust is going to fall to the Earth's surface. This is observed as a meteor shower. That these events occur in cycles, in many cases. Orbital motion is the reason of it. 

Gemini meteor shower.

    I introduce the meteor shower of the famous three. One is Gemini meteor shower. We can see this in December 14 before and after. Meteor of 30 from 20 per hour appears. This meteor shower is active in the same scale roughly every year. I can say that there is no hit or miss. Next up is Perseid Meteor Shower. This is active in 13 days after August. It is a meteor shower high-profile. It's because of overlap with summer vacation. I show the activities of the year's largest meteor of 60 from 30 per hour appears in this. Because it is the event of warm weather unlike the other two, I highly recommend you to everyone observation. 

    I introduce the Quadrantids last. It is also called Draco ι meteor shower. This is to work on January 4. Observation is difficult years of daytime peak for activity.And observable time is short. But it is suitable for the observation of the country good weather in the northern hemisphere. I regret that I did not introduce this meteor earlier. This is what these three are called the three major meteor shower. 

Trajectory of ISON comet.

    Because there is unevenness in the vanity and comets meteor shower the other, it is better to see the news of them on your own. It may not be possible to predict scientists. That ISON comet disappeared because this was too close to the sun is a pity. Large comet appears only once in a few years. You guys should not miss. 

    I've been told the charm the stars and the universe. I will be happy even if you guys were in love with astronomy.





The sources:
http://www.nhk.or.jp/space/ison/
http://en.wikipedia.org/wiki/Comet
http://www.amro-net.jp/meteor-info/meteorvisual_j.htm
http://en.wikipedia.org/wiki/Meteor_shower

The pictures:
http://komachi-navi.com/blog/wp-content/uploads/2012/12/e55704b74316baf3e499ed8d4c006c14.jpg
http://upload.wikimedia.org/wikipedia/commons/8/84/Leonidas_sigloXIX.jpg
http://www.astroarts.jp/news/2013/12/25ison/soho_ison.jpg

9. Hayabusa's Story

Hayabusa.

    Hayabusa is spacecraft should be proud of Japan. May 9, 2003, he was launched into space. He has reached the asteroid called Itokawa in 2005. And he came back to Earth on June 13, 2010. Everyone has probably remember that at that time. He accomplished the feat of many ever since. 

    There were two major mission imposed on the Hayabusa. It is necessary to pay close attention to those issues for Hayabusa project team. That they try the utility of the ion engine, Hayabusa thing bring back to Earth a sample from the asteroid another one. Both demanded a reliable technology to Hayabusa project team. It is because was to be nobody has tried yet. But it was a challenge that is worth doing.

    Ion engine is considered to scientists that it is useful in space. The output is small, but endurance is excellent. It was necessary to ascertain the ability of the change of direction and acceleration performance of Hayabusa. Ion engine of four was used as a power of Hayabusa. The solar panel is used for the energy source. The technique to land on asteroid has been used for Hayabusa. Mechanism for him to collect the sample was also provided of course. To summarize the thing that must be done of the Hayabusa project team, they are sent to the Hayabusa asteroid. And he land on the asteroid. He collected a sample of the asteroid. He comes back to earth.

Itokawa and Hayabusa.

    They did not send the falcon as planned in practice. They were plagued by engine trouble and solar wind. The former had damage to the solar panels. The latter was difficult to control the falcon. But Hayabusa project team did not give up at any time. They solved the problem calmly. Even when peregrine falcon was unable to collect the sample from Itokawa well, they were exploring the various possibilities. Hayabusa wanted to take away the sand and pebbles. It seemed to have failed, but we know that he brought back fine now. 

Sample of Itokawa.

    Plan is to not stop halfway, space scientists in Japan who fulfill the mission to the end 's great. They led to the success of unprecedented challenges, even while being in trouble. Fine of Itokawa Hayabusa brought back were analyzed. Challenges and they're not over yet. Plan of Hayabusa 2 has begun. Story of Hayabusa is subject to a number of the movie, I was excited the people. Something more than the excitement might be born again. He must leave better results than last time.




The sources:

http://en.wikipedia.org/wiki/Hayabusa

http://www.jaxa.jp/projects/sat/muses_c/

The pictures:

http://www.jaxa.jp/projects/sat/muses_c/images/topics_20130626.jpg

http://www.jaxa.jp/projects/sat/muses_c/images/hayabusa_list_001.jpg

http://www.jaxa.jp/projects/sat/muses_c/images/hayabusa_main_001.jpg