A space-time magnifying glass

May 15, 2013
Galaxy cluster Abell S1077, as seen by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 and the Advanced Camera for Surveys. Credit: ESA/Hubble & NASA

(Phys.org) —Bright arcs are smeared around the heart of galaxy cluster Abell S1077 in this image taken by the NASA/ESA Hubble space telescope. The arcs are stretched images of distant galaxies distorted by the cluster's enormous gravitational field.

are large groupings of galaxies, each hosting millions of stars. They are the largest existing structures in the Universe, bound by the gravitational attraction between them.

The amount of matter condensed in such groupings is so high that their gravity is enough to warp even the fabric of space-time, distorting the path that light takes when it travels through the cluster.

In some cases, this phenomenon produces an effect somewhat like a magnifying lens, allowing us to see objects that are aligned behind the cluster and that would otherwise be undetectable from Earth.

In this image, stretched stripes that look like scratches on a lens are in fact galaxies whose light is heavily distorted by the gravitational field of the cluster.

Astronomers use the effects of gravitational lensing to peer far back in time and space to see the furthest objects located in the early Universe.

One of the record holders is galaxy MACS0647-JD, whose light was magnified by galaxy cluster MACS J0647+7015 and has been travelling for 13.3 billion years to reach Earth.

Explore further: Astronomers discover likely precursors of galaxy clusters we see today

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User comments : 5

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1 / 5 (7) May 16, 2013
Strangely, the description sounds like R Duncan's interpretation of loopy magnetism 4*4 10 to the 13 power Gauss where everything is stretched.
The stumbling block now seems to turbulence. Fusion has hit a wall due to imperfections developing on the spherical surface. Tesla's work of 100 years ago where he claimed a gravity hill/wall has not been managed.
Science currently claims 'gravity waves' which Tesla proposed as being Einsteinian which is not so. Tesla opposed curved space creating gravity and E=mc2 also. I would like to see this current fad lauding curved space as being verified corrected to Tesla interpretation.
5 / 5 (2) May 16, 2013
... the light passing through gravitational well isn't redshifted.

It is blue shifted falling into the well and redshifted back to the original level on leaving.
1 / 5 (4) May 16, 2013
You should place the clock inside of gravitational lense to prove it. But in this moment the lensing effect would disappear for you. Two gravitational phenomena compensating each other = one quantum phenomena. Why the gravitational lens is actually quantum phenomena? It splits the time arrow.
5 / 5 (3) May 16, 2013
You should place the clock inside of gravitational lense to prove it.

Already done, it's called gravitational redshift and can be seen in the spectrum of the Sun.
May 20, 2013
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3 / 5 (6) May 20, 2013
The adopted paradigm of physics has been openly challenged which could be seen at http://www.worlds...mp;tab=2
Einstein's space-time concept has been mathematically, theoretically & experimentally proved baseless and General Theory of Relativity & Black Hole concept also have been proved baseless by Stephen Crothers in the published articles in� peer-reviewed journal-Refer Stephen Crothers web-site.

Getting reviewed by your peers is not something Crothers should claim proudly, considering his peers are all cranks, crackpots or mentally ill.

Stephen Crothers was booted out his graduate program because he was disruptive to his classmates, and put great effort into attempting to sabotage the work & research of his professors & supervisors. He was given the golden opportunity to study under one of the truly great astrophysicists of the 20th century, Paul Davies, and threw it away.

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