News tagged with distant universe

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The rise and fall of galaxy formation

An international team of astronomers, including Carnegie's Eric Persson, has charted the rise and fall of galaxies over 90 percent of cosmic history. Their work, which includes some of the most sensitive astronomical measurements ...

date9 hours ago in Astronomy
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Image: Hubble gets in on a galactic gathering

Nearly as deep as the Hubble Ultra Deep Field, which contains approximately 10,000 galaxies, this incredible image from the Hubble Space Telescope reveals thousands of colorful galaxies in the constellation of Leo (The Lion). ...

dateMay 30, 2016 in Astronomy
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A new technique to gauge the distant universe

Scientists have developed a technique to use quasars – powerful sources driven by supermassive black holes at the centre of galaxies – to study the universe's history and composition. To demonstrate the new method, based ...

dateDec 04, 2015 in Astronomy
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Why is the night sky black?

It sounds obvious. That's what night is. The sun has set and when you look up at the sky, it's black. Except where there's a star, of course. The stars are bright and shiny.

dateDec 02, 2015 in Astronomy
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VISTA pinpoints earliest giant galaxies

Just counting the number of galaxies in a patch of sky provides a way to test astronomers' theories of galaxy formation and evolution. However, such a simple task becomes increasingly hard as astronomers attempt to count ...

dateNov 18, 2015 in Astronomy
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Hubble spies Big Bang frontiers

Observations by the NASA/ESA Hubble Space Telescope have taken advantage of gravitational lensing to reveal the largest sample of the faintest and earliest known galaxies in the Universe. Some of these galaxies formed just ...

dateOct 22, 2015 in Astronomy
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