The Courier & Advertiser (Perth and Perthshire Edition)

Space experts turn Einstein’s gravity theory on its head

Ring of galaxies found that are scientific­ally impossible under current knowledge

- JonaThan WaTson jowatson@thecourier.co.uk

The world of physics may have been turned on its head after Fife scientists made a discovery that challenges Einstein’s theory of gravity.

Researcher­s at St Andrews University claim to have a found a ring of galaxies displaying characteri­stics that are scientific­ally impossible under what is currently known.

The 10 million light year-wide ring of small galaxies is said to be expanding, with the tsunami-like wake in the sky likely to have been stirred up by a nearmiss of the speeding Andromeda galaxy with our own galaxy, the Milky Way.

The two massive galaxies always orbited each other in a plane and would have scattered dwarf galaxies in their paths, perhaps explaining why the speeding dwarfs are in a plane also containing the Milky Way and Andromeda. Confirming the scale of the discovery, Dr Hongsheng Zhao, reader in the university’s school of physics and astronomy, said: “If Einstein’s gravity were correct, our galaxy would never come close enough to Andromeda to scatter anything that fast.”

Indranil Banik, the PhD student who led the study, said: “The ring-like distributi­on is very peculiar.

“These small galaxies are like a string of raindrops flung out from a spinning umbrella.

“I found there is barely a one in 640 chance for randomly distribute­d galaxies to line up in the observed way.

“I traced their origin to a dynamical event when the universe was only half its present age.”

“In Einstein’s gravity paradigm, hypothetic­al dark matter is always invoked.

“Such a high speed requires 60 times the mass we see in the stars of the Milky Way and Andromeda.

“However, the friction between their huge halos of dark matter would result in them merging rather than flying 2.5 million light years apart, as they must have done.”

Following the pair’s initial work, Dr Zhao has now applied for further funding to work out detailed simulation­s of the origin of the ring and our neighbouri­ng galaxies in alternativ­e gravity.

 ??  ?? A present-day near-miss of two spiral galaxies, NGC 5426 and NGC 5427, which may be comparable to the early flyby of the Andromeda galaxy past our own galaxy, the Milky Way.
A present-day near-miss of two spiral galaxies, NGC 5426 and NGC 5427, which may be comparable to the early flyby of the Andromeda galaxy past our own galaxy, the Milky Way.
 ??  ?? The scientists’ discovery challenges Einstein’s theory.
The scientists’ discovery challenges Einstein’s theory.

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