Når stjernedannelsen klinger ud, begynder galakserne at "dø", men indtil for nyligt har astronomerne aldrig med sikkerhed kunnet se starten på den proces i en fjern galakse. Det er sket nu, med hjælp fra Atacama Large Millimeter/submillimeter Array (ALMA), som European Southern Observatory er partner i. En galakse er observeret i færd med at udsende næsten halvdelen af den gas, som den kunne have brugt til at danne stjerner. Det sker med voldsom fart - hvad der svarer til massen af 10 000 Sole om året. Forskerholdet bag en ny artikel mener, at denne iøjnefaldende hændelse er igangsat af en kollision med en anden galakse, og den nye opdagelse får måske astronomerne til at genoverveje, hvordan man skal forestille sig, at galaksernes stjernedannelse holder op.
Pressemeddelelsen, billederne og videoerne er tilgængelige på:
https://www.eso.org/public/denmark/news/eso2101/
Med venlig hilsen,
The ESO Department of Communication
11. januar 2021
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Interview with Dinko Milaković
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