Tag Archives: great eruption

The Supernova That Wasn’t: A Tale of 3 Cosmic Eruptions

Combining images taken with the Hubble Space Telescope over more than 20 years, a team of UA researchers has discovered that Eta Carinae, a very massive star system that has puzzled astronomers since it erupted in a supernova-like event in the mid-19th century, has a past that’s much more violent than they thought. The findings help rewrite the story of how this iconic and mysterious star system came to be and present a critical piece of the puzzle of how very massive stars die. (more…)

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Echoes From an Exploding Star

*Astronomers watch a delayed broadcast of a powerful stellar eruption.*

Astronomers are watching the astronomical equivalent of streaming live video of a spectacular outburst from the unstable, behemoth double-star system Eta Carinae, which initially was seen on Earth nearly 170 years ago.

Dubbed the “Great Eruption,” the outburst lasted from 1837 to 1858 and caught the attention of sky-watchers at the time, including the British astronomer Sir John Herschel. He did not have the benefit of the imaging cameras and spectrographs that modern astronomers use to learn about stars, so we only have a historical record of the star’s visual brightness. (more…)

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