The Eta Carina nebula is one of the jewells of the Southern Skies, it was formed by the ejection of material from Eta Carina.
Eta Carina is a massive star with about 120-150 solar masses that is 7500-8000 light years away. This star has an erratic behaviour and will explode some day in a cataclismic supernova or maybe even an hypernova.
Today Eta-Carina is around magnitude 4 but in 1843 it reached magnitude -0.8 becoming the 2nd brightest star in the sky after Sirius. This event ejected part of the material that we can see today as the nebula.
I can be seen with the naked eye and contrast in a beautiful way with the dark coalsack nebula that is nearby.
© Luis Argerich - Astrophotography