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1040..​ၿဂိုဟ္​ေပါင္း​ ​၇​ ​လံုး​က​ ​ဝန္း​ရံ​လွည့္​ပတ္​ေန​သည့္​ ေန တစ္စင္းေတြ့ရွိ ( 31.8.10 )

 
Discovery: An artist's impression shows the planetary system around the sun-like star HD 10180

ေနႏွင့္ ​ဆင္​တူ​ေသာ​ ​ၾကယ္​တစ္​လံုး​ကို​ ​ၿဂိုဟ္​ေပါင္း​ ​၇​ ​လံုး​က​ ​ဝန္း​ရံ​လွည့္​ပတ္​ေန​သည့္​ ​ေန​အ​ဖြဲ့​အ​စည္း​တစ္​ခု​အား​ ​န​ကၡတ္​ေဗ​ဒ​ ​ပ​ညာ​ရွင္​မ်ား​က​ ​ရွာ​ေဖြ​ေတြ႕​ရွိ​ခဲ့​သည္​။​ ​

က ​မ႓ာ​မွ​ ​အ​လင္း​ႏွစ္​ ​၁၂၇​ ​အ​ကြာ​တြင္​ ​တည္​ရွိ​ေသာ​ ​ေနႏွင့္ ​ဆင္​တူ​ေသာ​ ​ၾကယ္​တစ္​လံုး​ကို​ ​ၿဂိုဟ္​ေပါင္း​ ​၇​ ​လံုး​က​ ​ဝန္း​ရံ​လွည့္​ပတ္​ေန​သည့္​ ​ေန​အ​ဖြဲ့​အ​စည္း​တစ္​ခု​အား​ ​န​ကၡတ္​ေဗ​ဒ​ ​ပ​ညာ​ရွင္​မ်ား​က​ ​ရွာ​ေဖြ​ေတြ႕​ရွိ​ခဲ့​သည္​.... ​ရွာ​ေဖြ​ေတြ႕​ရွိ​သ​မ်ွ​ ​ေန​အ​ဖြဲ့​အ​စည္း​ ​အား​လံုး​တို့​တြင္​ ​အ​ႀကီး​မား​ဆံုး​ဟု​ ​ယံု​ၾကည္​ရ​ဖြယ္​ ​ရွိ​ေန​သည္​။​ ​ပ​ညာ​ရွင္​မ်ား​က​ ​ယင္း​ေန​အ​ဖြဲ့​အ​စည္း​တြင္​ ​ၿဂိုဟ္​ ​၅​ ​လံုး​ ​ေသ​ခ်ာ​ေပါက္​ ​ရွိ​ေန​ၿပီး​ ​ေနာက္​ထပ္​ ​၂​ ​လံုး​ ​တည္​ရွိ​ေန​သည္​ဟု​ ​ယံု​ၾကည္​ရ​ဖြယ္​ ​အ​ေထာက္​အ​ထား​မ်ား​ ​ေတြ႕​ရွိ​ထား​ေၾကာင္း​ ​ေျပာ​ၾကား​ခဲ့​သည္​။​

Neptune​ၿဂိုဟ္​၏​ ​အ​ရြယ္​မ်ွ​ရွိ​ေသာ​ ​အ​စိုင္​အ​ခဲ​ ​၅​ ​ခု​တို့​မွ​ ​ထင္​ထင္​ရွား​ရွား​ ​တုန့္​ျပန္​မႈ​မ်ား​ကို​ ​ဖမ္း​ယူ​နိုင္​ခဲ့​ၿပီး​ ​ေနာက္​ထပ္​ ​အ​စိုင္​အ​ခဲ​ႀကီး​ ​၂​ ​ခု​တို့​မွ​ ​ထြက္​ေပၚ​လာ​သည္​ဟု​ ​ယူ​ဆ​ရ​ေသာ​ ​ေျမ​ဆြဲ​အား​မ်ား​ကို​လည္း​ ​ေထာက္​လွမ္း​ေဖာ္​ထုတ္​နိုင္​ခဲ့​ၾကာင္း​ ​လို​ဗစ္​ကဆို​သည္​။​

​ ၾကယ္​ႏွင့္​ ​အ​နီး​ဆံုး​ၿဂိုဟ္​မွာ​ ​ေန​ႏွင့္​က​မ႓ာ​ၾကား​ ​အ​ကြာ​အ​ေဝး​၏​ ​၀.​၀၆​ ​ရာ​ခိုင္​နႈန္း​မ်ွ​ ​အ​ကြာ​ျဖင့္​ ​လွည့္​ပတ္​ေန​ၿပီး​ ​အ​ေဝး​ဆံုး​ၿဂိုဟ္​မွာ​မူ​ ​ေန​ႏွင့္​က​မ႓ာ​ၾကား​ ​ကြာ​ဟ​ခ်က္​ထက္​ ​၁.​၄​ ​ရာ​ခိုင္​နႈန္း​ ​ပို​မ်ား​သည္​ဟု​ ​ယူ​ဆ​ရ​ေၾကာင္း​လည္း​ ​သိ​ရွိ​ရ​သည္​။

Read more: http://www.dailymail.co.uk/sciencetech/article-1305834/Solar-seven-planets-sun-found.html#ixzz0yAQNrGin

Ref:http://www.dailymail.co.uk/sciencetech/article-1305834/Solar-seven-planets-sun-found.html


Discovered beyond the sun: Solar system with seven planets


  • Nasa to make announcement about 'intriguing' discovery

A solar system containing up to seven planets orbiting a sun-like star has been detected 127 light years from Earth.

The planetary system is believed to be the largest ever discovered beyond the sun.

Astronomers have confirmed the presence of five planets and have tantalising evidence of two more.

And it comes as Nasa has said that it plans to make an announcement about an 'intriguing' planetary system that it has discovered using the Kepler space telescope

Discovery: An artist's impression shows the planetary system around the sun-like star HD 10180

Discovery: An artist's impression shows the planetary system around the sun-like star HD 10180

Kepler looks at the telltale 'wobble' as planets pass in front of distant stars and, earlier this year, astronomers announced that it had discovered more than 700 possible planets. The conference is scheduled for 1pm EDT (6pm BST).

The distance of the planets from their parent star follow a regular pattern, similar to that seen in our own solar system.

'We have found what is most likely the system with the most planets yet discovered,' said Dr Christophe Lovis, who led the European Southern Observatory (ESO) scientists.


Read more: http://www.dailymail.co.uk/sciencetech/article-1305834/Solar-seven-planets-sun-found.html#ixzz0yAQYDgbB

This remarkable discovery also highlights the fact that we are now entering a new era in exoplanet research: the study of complex planetary systems and not just of individual planets.

'Studies of planetary motions in the new system reveal complex gravitational interactions between the planets and give us insights into the long-term evolution of the system.'

The parent star, known as HD 10180, lies in the southern constellation of Hydrus 127 light years away.

Astronomers patiently studied it for six years using a planet-finding instrument called the HARPS spectrograph, attached to ESO's 3.6 metre (11.8ft) telescope at La Silla, Chile.

127 light years from Earth: A photograph of the region around the star HD 10180

127 light years from Earth: A photograph of the region around the star HD 10180

From 190 individual HARPS measurements, they were able to detect tiny wobbles in the star's motion caused by the gravitational tugs of its planets.

The five strongest signals corresponded to planets with Neptune-like masses, between 13 and 25 times that of the Earth.

These planets, with orbit periods ranging from six to 600 days, are separated from their star at 0.06 to 1.4 times the distance between the Earth and sun.

Dr Lovis added: 'We also have good reasons to believe that two other planets are present. One would be a Saturn-like planet (with a minimum mass of 65 Earth masses) orbiting in 2,200 days. The other would be the least massive exoplanet ever discovered, with a mass of about 1.4 times that of the Earth.

'It is very close to its host star, at just two per cent of the Earth-sun distance. One 'year' on this planet would last only 1.18 Earth days.'

The planet would be rocky, like the Earth, but probably far too hot to sustain life.

With at least five Neptune-sized planets circling inside an orbit equivalent to that of Mars, the HD 10180 system has a more populated inner region than our solar system.

So far astronomers have found 15 systems containing at least three planets.

The last record holder was 55 Cancri, which has a total of five planets including two gas giants.

Details of the discovery were presented today at an exoplanet meeting at the Haute-Provence Observatory in south-east France.

A paper on the research has been submitted to the journal Astronomy And Astrophysics.



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