BBC News - Dark energy and flat Universe exposed by simple method: "Researchers have developed a simple technique that adds evidence to the theory that the Universe is flat.
Moreover, the method - developed by revisiting a 30-year-old idea - confirms that 'dark energy' makes up nearly three-quarters of the Universe.
The research, published in Nature, uses existing data and relies on fewer assumptions than current approaches.
Author Christian Marinoni says the idea turns estimating the Universe's shape into 'primary school' geometry.
While the idea of the Earth being flat preoccupied the first philosophers millennia ago, the question of whether the Universe itself is flat remains a debatable topic.
The degree to which the Universe is curved has an effect on what astronomers see when they look into the cosmos.
A telescope on or near Earth may see an image of a celestial object differently from how the object actually looks, because the very fabric of space and time bends the light coming from it."
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