Aristotle: Universe finite or infinite?

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cosmic topology

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Science

Cosmologists Try a New Way to Measure the Shape of the Universe | Quanta Magazine

Summary

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The universe could be boundless, continuing in all directions without end, or it could be sealed up in a compact shape such as a sphere or doughnut.

A group of about 15 scientists from seven countries has devised a new way of finding topological clues.

They’re taking advantage of computational capabilities that weren’t available a decade ago .

The brightness and temperature of the CMB surface appear to be remarkably uniform, with variations of just one part in 100,000 from one spot to another.

The researchers carried out an exhaustive search for such circles, relying upon CMB data from the Wilkinson Microwave Anisotropy Probe .

The absence of circles could mean that the universe is infinite and unbounded.

Compact researchers map out the sounds that we expect to be produced by the various topologies.

Researchers have started with the easiest topologies, starting with a simple 3D torus, labeled E1 .

A paper with templates for the remaining eight nonorientable flat topologies should become available early this year .

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informal

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English