Eta Carinae Homunculus Nebula
![Eta Carinae Homunculus Nebula Eta Carinae Homunculus Nebula](https://nasa3d.arc.nasa.gov/shared_assets/models/eta-carinae-homunculus-nebula/homunculus-428x321.jpg)
In the middle of the 19th century, the massive binary system Eta Carinae underwent an eruption that ejected at least 10 times the sun's mass and made it the second-brightest star in the sky. Now, a team of astronomers has used extensive new observations to create the first high-resolution 3-D model of the expanding cloud produced by this outburst.