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Eta Carinae A

BASIC INFO

Eta Carinae A, the primary star in the Eta Carinae system, is one of the most massive and luminous stars known in the Milky Way galaxy. Classified as a luminous blue variable (LBV) star, it exhibits dramatic variability in brightness attributed to its unstable outer layers and episodic mass loss. Eta Carinae A is famous for its Great Eruption, a spectacular outburst event in the mid-19th century that briefly made it one of the brightest objects in the night sky. As part of a binary system with Eta Carinae B, it generates powerful stellar winds and plays a crucial role in shaping the surrounding nebula.

ADVANCED INFO

Size: 346.15 million miles across

Mass: 120 solar masses

Distance from Earth: 7,502 light-years

Galaxy: Milky Way

Age: Less than 3 million years old

Luminosity: 4.6 million L

Type: Luminous blue variable

Temperature: 26,540 Fahrenheit (14,727 Celsius) (At surface)

SOME RANDOM FACTS

Despite its extreme properties, the future evolution of Eta Carinae A remains uncertain.
Like other LBVs, Eta Carinae A exhibits significant variability in its brightness over time. These fluctuations in luminosity are thought to be caused by instability in the star's outer layers and episodic mass loss.
Eta Carinae A is famous for its Great Eruption, a colossal outburst event that occurred in the mid-19th century (around 1837-1856). During this event, the star briefly became one of the brightest objects in the night sky, rivaling even Sirius, the brightest star visible from Earth.

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