Wednesday, January 26, 2022

We all die ...

We all die, including stars, the entities that make life possible when they too go to their maker. Eta Carinae'se not quite there yet but her end is inevitable, just like the rest of us.

A new astronomical visualization from NASA’s Universe of Learning showcases the multiwavelength emissions (from infrared light through X-rays) and three-dimensional structures surrounding Eta Carinae, one of the most massive and eruptive stars in our galaxy. The video, “Eta Carinae: The Great Eruption of a Massive Star,” was released today. (See video embedded above.)

Eta Carinae, or Eta Car, is famous for a brilliant and unusual outburst, called the “Great Eruption,” observed in the 1840s. This briefly made it one of the brightest stars in the night sky, releasing almost as much visible light as a supernova explosion.

The star survived the outburst, and slowly faded away for the next five decades. The primary cause of this brightness change is a small nebula of gas and dust, called the Homunculus Nebula, that was expelled during the blast, and has blocked the light of the star.

Eta Carinae is one of the most massive stars known. These exceptional stars are prone to outbursts during their lives. They will end their lives by collapsing into a black hole, probably accompanied by a supernova explosion. Eta Car is one of the nearest and best studied examples for learning about the energetic life and death of very massive stars.


Existence doesn't care whether we live or die, existence simply is.

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