P13 na periferii galaxie NGC 7793. Kredit: X-ray (NASA/CXC/Univ of Strasbourg/M. Pakull et al); Optical (ESO/VLT/Univ of Strasbourg/M. Pakull et al); H-alpha (NOAO/AURA/NSF/CTIO 1.5m); Insert Image credit: created by Tom Russell/ ICRAR.
