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OUT OF MIND » PLANET AWARENESS » GUIDE TO THE NIGHT SKY » Eyes on Eta Carinae - What's Up with the Most Luminous & Enigmatic Star in the Milky Way?

Eyes on Eta Carinae - What's Up with the Most Luminous & Enigmatic Star in the Milky Way?

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PurpleSkyz

PurpleSkyz
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Eyes on Eta Carinae - What's Up with the Most Luminous & Enigmatic Star in the Milky Way? 250px-EtaCarinaeStarSystem-ChandraXRayObservatory-20140826



https://youtu.be/GRFvnARaC-w

Eyes on Eta Carinae - What's Up with the Most Luminous & Enigmatic Star in the Milky Way? AAuE7mDKtSa98ewzXYWWgMIS0VcgCzJL-_UxgmPXow=s48-mo-c-c0xffffffff-rj-k-no
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Published on Jan 31, 2019


For over a century and a half, Eta Carinae has been one of the most luminous – and most enigmatic – stars of the southern Milky Way Part of its nature was revealed in 1847, when, in a giant eruption, it ejected a nebula called the Homunculus ("little man"). The event made Eta Carinae the second-brightest star in the sky after Sirius, visible even in broad daylight and (later) easily distinguishable from other, similarly unstable stars called Luminous Blue Variables, whose nebulae are not so clearly visible. Aside from making Eta Carinae one of the most beautiful and frequently photographed objects in the night sky, the giant Homunculus contains information about its parent star, ranging from the energy of its expansion to its bipolar outflow and chemical composition. In as little as a decade from now, however, we will no longer be able to see the nebula clearly. A recent study indicates that the Homunculus will be obfuscated by the increasing brightness of Eta Carinae itself. So rapidly is it growing, in fact, that in 2036 the star will be 10 times brighter than its nebula, which in the end will make it indistinguishable from other LBVs. Read more at: https://phys.org/news/2019-01-goodbye... https://arxiv.org/abs/1901.00531



  

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