From Hubble
Left: Image from 2003, middle: 2018, right: both with colors. The star in the middle is surrounded by a nebula with two circle-shapes touching the central star. Probably the image on the right shows a slight increase of size.
Big spikes are caused by the bright star in the center and are not part of the nebula.
https://bsky.app/profile/melina-iras07572.bsky.social/post/3mksfvxniss2c
by Neaterntal
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Eta carinae A- 90 to 120 solar masses
Eta carinae B- 30 to 80 solar masses
Eta carinae A produces so much energy that gravity couldn’t hold it together in 1843 (from the perspective of earth) and produced a supernova imposter event making it the second brightest star in the sky. That eruption created that 2 lobed shaped nebula.