New Galaxy, Old beginning, farthest distance! (13.3 billion light years)

Découverte de la galaxie la plus vieille de l’Univers

le Vendredi 16 Novembre 2012 à 19:56

Des astronomes ont découvert la galaxie la plus lointaine jamais identifiée. Elle se situe à 13,3 milliards d’années lumière de la terre. Il a fallu un zoom ultra puissant pour la voir. Un phénomène théorisé par un certain Albert Einstein.

La doyenne des galaxies MACS0647-JDNASA

Elle a été baptisée MACS0647-JD. C’est la doyenne des galaxies connues. Elle a été observée par des astronomes à 13,3 milliards d’années lumière. La plus grande distance jamais observée. Pour parvenir à la détecter, ils ont dû associer des télescopes spatiaux Hubble et Spitzer, plus, un zoom. Un zoom super puissant. Le plus puissant qui existe appelé le phénomène “lentille gravitationnelle” fourni par l’espace lui-même.

The Space telescopes Hubble and Spitzer have helped discover a new galaxy named MACS0647-JD, which has a distance from Earth of 13.3 billion light years, the farthest distance ever discovered. Using a phenomena first theorised by Albert Einstein, in his theory of relativity, a super zoom strength, called lentil gravitation, furnished by space itself, and possibly generated by and in a black hole, allows this galaxy to be seen from massive distances. The almost century old theory, developed by Einstein demonstrates that huge objects in space, like galaxies, develop a enormous gravitational field can bring in available light from passing ortbits! This magnifies the image when observed from distance.  

Albert Einstein l’avait dit

Ce phénomène avait été théorisé par Albert Einstein il y a près d’un siècle. Dans sa théorie de la relativité générale, il démontrait que des objets très massifs, comme un amas de galaxies, ont un champ gravitationnel tellement fort qu’ils parviennent à faire dévier les rayons lumineux passant à proximité. Comment en arrive-t-on à un zoom ? Parfois, cette déformation agit comme une loupe gigantesque qui amplifie l’image perçue par un observateur situé de l’autre côté.

La galaxie en pleine formation

Après un voyage de 8 milliards d’années, la lumière émise par MACS0647-JD a croisé dans les parages d’un amas de galaxies massif, qui l’a considérablement amplifiée. Elle est apparue bien plus brillante qu’elle ne l’est en réalité.

After a voyage of 8 billion years, the light emitted by MAC0647-JD is amplified as it passes the mass of the huge galaxy and makes the galaxy look brighter than it actually is.

MACS0647-JD est si petite qu’elle semble être aux premiers stades de formation d’une galaxie. Sa largeur ne dépasserait pas 600 années-lumière. En comparaison, la Voie Lactée atteint les 150.000 années-lumière.

This glaxy is small in comparison to those already discovered. Compared to the Milky Way (Our Galaxy), which measures 150,000 light years across, MACS0647-JD is less than 600 light years in size. Which makes this discovery even more remarkable.

 

About bill

Worked in the technical / engineering area as a Science Laboratory Technician and as an Aeronautics Engineer. The artistic side involves writing under the nom de plume of Billy Olsenn, his recently written play 'A Case of Wine' was staged by the players group Straight Make-Up at the 2012 Birr one act drama festival. It's next staging was in the one act circuit is in Cavan, at Maudebawn on Sat 10 Nov 2012. Then it was performed in the Bray, Co.Wicklow at the very popular one act festival in January 2013. Next play is FEAR. A dark tale about revenge on the cruel death of two pensioners by young thugs. Neighbours hatch a devious and dangerous plan to exact old-style revenge. Bill is a member of the Drama League of Ireland and his plays have been critically vetted and certified as original pieces of work by the DLI. Another literary project is that of commemoration of an aircraft crash on Djouce mountain in Wicklow in 1946. Bill wrote articles for the 50th, 60th and most recently the 70th anniversary, (12 Aug 2016) all were published in the Wicklow Times and ensured the survivors of the crash, all French Girl Guides, were not forgotten. Articles reproduced on this website. But mostly this site gives a more general European and specific French slant on popular and not so popular articles of French news, translated to English by the author. Each article is translated on a paragraph by paragraph basis so easy to read in either language and even possible to improve either language by comparison of the short English and French paragraphs. Amusez vous bien. The author is currently writing an easy to read technical aviation book centered around the Fokker 50. Another interest is that dealt with in another of Bill's websites www.realnamara.net, a Statue of the mother of God, Mary. It was erected in 1972 in Dublin, at the end of the Bull Wall near Clontarf, and my grandfather William Nelson, was the main instigator of that project. I give talks on the history of the statue and my grandfather's adventurous and dangerous life at sea. Technical assistance with each website is by J O'N.
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