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Galaksije fosili 'jedu' komsijske galaksije!

Napisano na dan: 8.4.2005

Galaksije fosili 'jedu' komsijske galaksije!
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Fossil galaxies 'eat neighbours'
By Paul Rincon
BBC News science reporter, in Birmingham

Chandra sees 10-million-degree gas (blue) around NGC 6482
Astronomers are shedding light on the phenomena known as "fossil" galaxies.

These are isolated giant galaxies that have grown over time - the result of mergers between galaxies in a group.

Their creation may begin in the close encounter of two large galaxies which spiral together and then pull in all the smaller satellites around them.

Fossil galaxies are now being studied using the latest generation of X-ray telescopes, according work presented at the UK National Astronomy Meeting.

Researchers say the fossils' cores are packed with dark matter, as well as normal matter.

Mysterious dark matter has not been detected directly, but it can be inferred because it has a gravitational influence on normal matter.

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