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[Dunia] Astronomers jumpa galaxy sejauh 13.3 billion tahun cahaya

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Post time 16-11-2012 09:34 PM | Show all posts |Read mode
Astronomers spot oldest, furthest galaxyA handout picture released on November 15, 2012 by the European Space Agency (ESA) shows a view from the Hubble Space Telescope of the massive galaxy cluster MACS J0647.7+7015. - AFP PHOTO /ESA/HUBBLE

PARIS - Astronomers using a complex system of super telescopes have caught a glimpse of what is likely the most distant, and thus oldest, galaxy ever seen - some 13.3 billion light years from Earth.

The star cluster was observed in its infancy - as it looked when the Universe was just three percent of its present age, NASA and the European Space Agency announced.

"We see the newly discovered galaxy, named MACS0647-JD, as it was 420 million years after the Big Bang" that created the Universe 13.7 billion years ago, a statement said.

"Its light has travelled 13.3 billion years to reach Earth."

The astronomers, grouped under the joint American-European CLASH project, use the orbiting Hubble and Spitzer telescopes as well as employing massive galaxy clusters as cosmic magnifiers to find distant galaxies.

The process, known as gravitational lensing, allows astronomers to see galaxies that emit light with a brightness weaker than that of a candle on the Moon, thus undetectable directly by telescopes on Earth.

The newly discovered cluster is so small, less than 600 light years across, that scientists believe it may still be in the first stages of galaxy formation.

Our own Milky Way is 150,000 light years across.

"The estimated mass of this baby galaxy is roughly equal to 100 million or a billion suns, or 0.1 to 1.0 percent of our Milky Way's stars," the statement said.

In September, the CLASH scientists said they had spotted the Universe's oldest and furthest galaxy, using the same technique - the previous record-holding 13.2 billion light years away.

With gravitational lensing, theorised by Albert Einstein himself, astronomers use younger galaxies that lie closer to Earth to magnify older ones lurking in the distance by bending the light they emit.

"This latest discovery has outstripped even my expectations of what would be possible with the CLASH programme," said Rychard Bouwens of the Netherlands' Leiden University, co-author of the study to be published in the Astrophysical Journal in December. - AFP



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Post time 16-11-2012 10:21 PM | Show all posts
itu yang dulu 13billion tahun lepas
yang sekarang ni dah jadi apa agaknye ek..
nak kena tunggu lagi 13 billion tahun lagi kot?
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Post time 16-11-2012 10:23 PM | Show all posts
org mesia hari2 jumpa galaxy,,,galaxy s2 s3 galaxy ace plus.....
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Post time 16-11-2012 10:28 PM | Show all posts
yang tu bape billion tahun cahaya pulak??
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Post time 16-11-2012 10:30 PM | Show all posts
apa yang astronomers lihat tu...benda2/partikel2 yang berusia 13billion tahun lepas...makna nya kalo masa tu..disana..kehidupan baru terbentuk..makna nya kehidupan selepas 13billion tahun tu adalah lebih maju dari manusia....
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Post time 16-11-2012 10:31 PM | Show all posts
lama2 manusia mungkin akan nampak tuhan melalui teleskop
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Post time 16-11-2012 10:34 PM | Show all posts
Itu adalah tinggalan imej pada 13billion tahun cahaya...ada kemungkinan besar galaksi itu sudah lenyap...ataupun semakin mengecil atau pun membentuk kehidupqn sekaligus ketamadunan
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 Author| Post time 16-11-2012 10:38 PM | Show all posts
lepas billion. kiraan seterusnya ialah trilion
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