ASTRONOMII SUNT DE PARERE CA NU SUNTEM SINGURI IN UNIVERS…Astronomers Find First Evidence Of Other Universes

S-ar parea ca nu suntem  singuri in Univers, mai mult, acesta s-a ciocnit cu alte cosmosuri de cel putin patru ori in trecutul sau indepartat,spun mai multi specialisti care au studiat ecourile Big Bang-ului si modul in care acestea s-au  propagat prin spatiul cosmic….

Roger Penrose, specialist in cadrul Universitatii Oxford si omologul sau Vahe Gurzadyan de la Universitatea de Stat de Erevan, Armenia, au anuntat ca microundele detectate de ei in spatiul cosmic se deplaseaza in cercuri concentrice, o dovada clara a faptului ca Universul este ciclic. Teoria sustine ca odata cu sfarsitul fiecarui univers are loc un alt Big Bang care da nastere unui nou cosmos. Este, daca preferati, ca un model al papusilor rusesti, fiecare continand o alta.

In plus, in urma cu numai cateva zile, un grup de specialisti de la Colegiul Universitar din Londra, grup condus de Stephen Feeney, a reusit sa identifice patru valuri distincte de microunde, descoperire ce indica faptul ca universul nostru s-a regenerat de cel putin patru ori pana acum. Totusi, ipoteza sustinuta de Feeney si colegii sai arata ca fiecare Univers se sparge in mai multe cosmosuri mici, aceasta stand ca intr-o celula, in alte cosmosuri mai mari.

Astronomers Find First Evidence Of Other Universes

There’s something exciting afoot in the world of cosmology. Last month, Roger Penrose at the University of Oxford and Vahe Gurzadyan at Yerevan State University in Armenia announced that they had found patterns of concentric circles in the cosmic microwave background, the echo of the Big Bang.

This, they say, is exactly what you’d expect if the universe were eternally cyclical. By that, they mean that each cycle ends with a big bang that starts the next cycle. In this model, the universe is a kind of cosmic Russian Doll, with all previous universes contained within the current one.

That’s an extraordinary discovery: evidence of something that occurred before the (conventional) Big Bang.

Today, another group says they’ve found something else in the echo of the Big Bang. These guys start with a different model of the universe called eternal inflation. In this way of thinking, the universe we see is merely a bubble in a much larger cosmos.

This cosmos is filled with other bubbles, all of which are other universes where the laws of physics may be dramatically different to ours.

These bubbles probably had a violent past, jostling together and leaving „cosmic bruises” where they touched. If so, these bruises ought to be visible today in the cosmic microwave background.

Now Stephen Feeney at University College London and a few pals say they’ve found tentative evidence of this bruising in the form of circular patterns in cosmic microwave background. In fact, they’ve found four bruises, implying that our universe must have smashed into other bubbles at least four times in the past.

Again, this is an extraordinary result: the first evidence of universes beyond our own.

So, what to make of these discoveries. First, these effects could easily be a trick of the eye. As Feeney and co acknowledge: „it is rather easy to fifind all sorts of statistically unlikely properties in a large dataset like the CMB.” That’s for sure!

There are precautions statisticians can take to guard against this, which both Feeney and Penrose bring to bear in various ways.

But these are unlikely to settle the argument. In the last few weeks, several groups have confirmed Pernose’s finding while others have found no evidence for it. Expect a similar pattern for Feeney’s result.

The only way to settle this will be to confirm or refute the findings with better data. As luck would have it, new data is forthcoming thanks to the Planck spacecraft that is currently peering into the cosmic microwave background with more resolution and greater sensitivity than ever.

Cosmologists should have a decent data set to play with in a couple of years or so. When they get it, these circles should either spring into clear view or disappear into noise (rather like the mysterious Mars face that appeared in pictures of the red planet taken by Viking 1 and then disappeared in the higher resolution shots from the Mars Global Surveyor).

Planck should settle the matter; or, with any luck, introduce an even better mystery. In the meantime, there’s going to be some fascinating discussion about this data and what it implies about the nature of the Universe. We’ll be watching.

Ref:

http://arxiv.org/abs/1012.1995: First Observational Tests of Eternal Inflation

http://arxiv.org/abs/1011.3706: Concentric Circles In WMAP Data May Provide Evidence Of Violent Pre-Big-Bang ActivityOur cosmos was „bruised” in collisions with other universes. Now astronomers have found the first evidence of these impacts in the cosmic microwave background

13/ 12//2010

Sursa:Tehnologyreview

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TAIVANEZELE FARA BARBATI SE MARITA…CU ELE.Taiwanese woman to marry herself

Chen Wei-yih o fata din Taivan,a pozat  într-o rochie alba de nunta la un banchet pentru  a  celebrarea o căsătorie  in prezenta a  30 de prieteni.

Numai ca ..sotul lipse din poza! Fata nu a gasit un baiat care sa o inspire si e confruntata cu presiuni din partea familiei si a societatii, să se căsătorească….

„Pana acum,la vârsta de treizeci  de ani, nu am gasit un partener, deci ce pot face?”a spus d-ra  Chen .Eu nu sunt anti-casatorie Sper doar să îmi pot exprima alte  idei în limitele tradiţiilor in care traim..”

Taiwanese woman to marry herself

Chen Wei-yih said her mother had insisted on a groom at first but later jumped aboard the solo marriage plan Photo: GETTY

Taipei – A Taiwanese woman feels she is under pressure to get married, but hasn’t yet met a man she wants to spend the rest of her life with, so she decided she will marry herself.

Chen Wei-yih, a 30-year-old office worker from Taipei, has posed for photos in white gown, hired a wedding planner and rented a banquet hall where she will celebrate with 30 friends and family members on November 6. „Age thirty is a prime period for me.

 My work and experience are in good shape, but I haven’t found a partner, so what can I do?” The Telegraph quoted Chen as saying. „It’s not that I’m anti-marriage. I just hope that I can express a different idea within the bounds of a tradition.” Women in Taiwan are not marrying as young as previously, and more are choosing to remain single as their economic status improves.

The government is concerned about a drop in the birth rate and productivity. Chen will go on a solo honeymoon to Australia following the wedding. Although she is looking forward to this wedding, she still hopes she will have a wedding with a groom some day.

Read more:digitaljournal.

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