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<Galakser>

QuestionAnswer
Hvad står tallet 1-7 for i klassifikationen af en elliptisk galakse? Excentriciteten, et udtryk for hvor fladtrykt den er
Hvor stor er en typisk superhob ca? 100 mio lysår
Hvad betyder "universets storstruktur"? Den måde superhobene er arrangeret i forhold til hinanden. Det ser ud som om de "ligger på overfladen af nogle store bobler"
Bliver elliptiske galakser ved med stjernedannelse længere end spiralgalakser? Nej, de elliptiske galakser er hurtige til at opbruge alt deres støv og gas og stopper hurtigt med stjernedannelsen.
Hvad er forskellen på begreberne galaksehob, superhob og kuglehob? Galaksehob = en gruppe af galakser Superhob = en gruppe af galaksehobe Kuglehob = en gruppe af stjerner i en spiralgalakses halo.
Hvad er en gravitationel linse? En stor galakse der afbøjer lyset fra en galakse der ligger bag ved den. Dermed kan vi se lyset fra meget fjerne galakser.
Hvad er forskellen på en merger og kannibalisme? En merger er to galakser af ca samme størrelse der ramler ind i hinanden. Kannibalisme er når en større galakse opsluger en mindre galakse.
Hvilken hob er Mælkevejen en del af? Den lokale gruppe
Hvad er en satellitgalakse? En lille galakse der kredser om en større galakse. f.eks. de Magellanske skyer
Hvad har de fleste store regulære galaksehobe til fælles? De har en stor E-galakse i midten af hoben som har opslugt andre galakser.
Created by: 4lfred
 

 



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