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Astronomers spot biggest structure in Universe

AFP
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An artist's conception of a quasar.
An artist's conception of a quasar.

Astronomers on Friday said they had observed the largest structure yet seen in the cosmos, a cluster of galaxies from the early Universe that spans an astonishing four billion light years.

The sprawling structure is known as a large quasar group (LQG), in which quasars — the nuclei of ancient galaxies, powered by supermassive black holes — clump together.

It would take a spaceship travelling at the speed of light four thousand million years to get from one end of the cluster to the other.

To give a sense of scale, our galaxy is separated from its nearest neighbour, the Andromeda galaxy, by two and a half million light years.AFP

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