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MetagalaxiaClasificarea galaxiilor

Galaxii cu nuclee activeQuasarii

Expansiunea universului

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Metagalaxia este partea universului

accesibil observaiilor astronomice

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Schemaprii

accesibile

a Universului

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Clasificarea galaxiilor

Galaxii spirale i

pseudospirale Galaxii eliptice

Galaxii neregulate Forme speciale

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Galaxii spirale i pseudospirale

cu frecvena de 60%

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Calea Lactee

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Galaxia

Andromeda

M !

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Galaxia

"om#rero

M !0$

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Galaxia pseudospiralM 83

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Galaxii eliptice

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Galaxii neregulate

!&orul Mic al lui Magellan

' &orul Mare al lui Magellan

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Galaxii cu forme speciale

Galaxia triung(iular)

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Galaxiile active

Galaxia radio

M *+

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Galaxiile active

,uasarii

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Galaxiile active

Galaxii

cu nuclee

active

G l iil d f

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Galaxiile grupndu-se formeazRoiuri de galaxii= clustere

Roiul

Aell !"8#

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$istriu%ia roiurilor n univers

& i ' i l i

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&xpansiunea 'niversului.Galaxiile se deprteaz

permanent una fa

de alta, distanele

dintre ele devenind

tot mai mari,cu viteze

enorme. Acest

proces cuprinde totuniversul = i este

numit ExpansiuneaUniversului

.Procesul a fostdemonstrat de

Friedman

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)ompendiu Astronomie* +elmut (ern,ard*&dAll &ducational

.rimele trei minute ale universului* /teven

0einerg* &d.olitic 'niversul* 1asile 'rec,e* &d $acia

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