Largest structure in universe discovered — it’s mind-boggling

(Photo: ESO / M. Kornmesser)

Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretches 4 billion light-years from end to end.

Space bursts provide insight to ‘theory of everything’

(Photo: NASA / D.Berry)

Light from some of the universe’s most energetic explosions is allowing scientists to probe the nature of space-time, according to new observations of so-called gamma-ray bursts from the Japanese Aerospace Exploration Agency’s Ikaros spacecraft. Photons released by these bursts help place limits on a unified model of all of the forces of nature — what scientists call a “theory of everything.”

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    Hubble telescope reveals farthest-ever view of universe

    (Photo: NASA / ESA / UCSC / Leiden / HUDF09)

    The Hubble Space Telescope has captured the farthest-ever view into the universe, a photo that reveals thousands of galaxies billions of light-years away.

    The picture, called eXtreme Deep Field, or XDF, combines 10 years of Hubble telescope views of one patch of sky. Only the accumulated light gathered over so many observation sessions can reveal such distant objects, some of which are one ten-billionth the brightness that the human eye can see.

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