News tagged with black holes

High-speed jets from a possible new class of galaxy

Seyfert galaxies are similar to spiral galaxies except that they have extraordinarily prominent, bright nuclei, sometimes as luminous as 100 billion Suns. Their huge energies are thought to be generated as matter falls towards ...

dateJan 19, 2015 in Astronomy
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A simulation of the universe with realistic galaxies

An international team of astronomers, based at the Universities of Leiden in the Netherlands and Durham in the UK and, led by professor Joop Schaye (Leiden University), developed a simulation of the universe in which realistic ...

dateDec 30, 2014 in Astronomy
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The cosmic seeds of black holes

Supermassive black holes with millions or billions of solar-masses of material are found at the nuclei of most galaxies. During the embryonic stages of these galaxies they are thought to play an important role, acting as ...

dateJan 19, 2015 in Astronomy
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Mysterious quasar sequence explained

Quasars are supermassive black holes that live at the center of distant massive galaxies. They shine as the most luminous beacons in the sky across the entire electromagnetic spectrum by rapidly accreting matter into their ...

dateSep 10, 2014 in Astronomy
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Two spiral galaxies in the process of merging

At this time of year, there are lots of gatherings often decorated with festive lights. When galaxies get together, there is the chance of a spectacular light show as is the case with NGC 2207 and IC 2163

dateDec 12, 2014 in Astronomy
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How far back are we looking in time?

The Universe is a magic time window, allowing us to peer into the past. The further out we look, the further back in time we see. Despite our brains telling us things we see happen at the instant we view them, light moves ...

dateMar 06, 2015 in Astronomy
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