Discovery of Speeding Galaxies May Challenge Einstein’s Gravity and Dark Matter


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A present-day near-miss of two spiral galaxies NGC 5426 and NGC 5427, which is possibly comparable to the early flyby of the Andromeda Galaxy past our own Milky Way. Courtesy of © Gemini Image Gallery.

A discovery of fast-moving galaxies, 10 million light years wide, may cause physicists to re-examine Einstein’s theory of relativity. A team from University of St. Andrews in Scotland found the enormous ring of galaxies speeding away from our galaxy much faster than existing physics modeling predicts. In fact, the scientists believe the galaxies are moving so quickly that they are calling this expansion “a mini Big Bang”.

Dr. Hongsheng Zhao and PhD student Indranil Banik co-authored the study, which came from investigating 54 galaxies in what’s called “the Local Group” of the Universe. The scientists explain the unexpected conclusions by proposing that at some point 7 to 11 billion years ago the neighboring Andromeda Galaxy came so close to our own Milky Way Galaxy that they created a “tsunami-like wake,” scattering smaller galaxies with a sling-shot-like effect.

“If Einstein’s Gravity were correct, our Galaxy would never come close enough to Andromeda to scatter anything that fast,”

Sasha Harriet

Sasha Harriet

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