Expanding Universe, Dark Energy Are Illusions

A new theory suggests that the accelerating expansion of the universe is merely an illusion. The false impression results from the way our particular region of the cosmos is drifting in space.

What's the Latest Development?


A new theory pioneered by cosmologist Christos Tsagas claims that some of the most confounding observations and theories in modern physics, specifically that of an expanding universe caused by slippery dark energy, may be just an illusion created by the location of our corner of the cosmos relative to other parts. The explanation hinges on an observation known as 'dark flow' which states that our section of the universe, roughly 2.5 billion light years wide, is moving at a different speed and direction than other sections. 

What's the Big Idea?

If 'dark flow' is real, it may provide a simpler understanding of the cosmos than current theories. When an expanding universe was observed in the 1920s, cosmologists were confounded because gravity implies that large bodies attract one another—scientists therefore thought the universe was naturally shrinking. "Dark flow is by far less mysterious [than dark energy]: While no one knows what dark energy is, or how we might find it, dark flow is merely movement." The theory also throws into question how, or if, the universe will end. 

Why a federal judge ordered White House to restore Jim Acosta's press badge

A federal judge ruled that the Trump administration likely violated the reporter's Fifth Amendment rights when it stripped his press credentials earlier this month.

WASHINGTON, DC - NOVEMBER 16: CNN chief White House correspondent Jim Acosta (R) returns to the White House with CNN Washington bureau chief Sam Feist after Federal judge Timothy J. Kelly ordered the White House to reinstate his press pass November 16, 2018 in Washington, DC. CNN has filed a lawsuit against the White House after Acosta's press pass was revoked after a dispute involving a news conference last week. (Photo by Alex Wong/Getty Images)
Politics & Current Affairs
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How to split the USA into two countries: Red and Blue

Progressive America would be half as big, but twice as populated as its conservative twin.

Image: Dicken Schrader
Strange Maps
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  • Perhaps the best way to stop the infighting is to go for a divorce and give the two nations a country each
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Scientists just voted to change the definition of a kilogram

The definition of a kilogram will now be fixed to Planck's constant, a fundamental part of quantum physics.

Greg L via Wikipedia
Surprising Science
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  • Unlike the current definition of a kilogram, this measurement will never change.
  • Scientists also voted to update the definitions of several other measurements in physics.
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