rfmcdonald: (obscura)
[personal profile] rfmcdonald
Via io9 I found this remarkable Hubble shot of Tarantula Nebula, one of the most visible features of our Milky Way Galaxy's satellite galaxy, the Large Magellanic Cloud.

Tarantula Nebula, Large Magellanic Cloud


The Tarantula Nebula (also known as 30 Doradus, or NGC 2070) is an H II region in the Large Magellanic Cloud. It was originally thought to be a star [hence the Flamsteed name 30 Doradus], but in 1751 Nicolas Louis de Lacaille recognized its nebular nature.

The Tarantula Nebula has an apparent magnitude of 8. Considering its distance of about 49 kpc (160,000 light years), this is an extremely luminous non-stellar object. Its luminosity is so great that if it were as close to Earth as the Orion Nebula, the Tarantula Nebula would cast shadows. In fact, it is the most active starburst region known in the Local Group of galaxies. It is also the largest such region in the Local Group with an estimated diameter of 200 pc. The nebula resides on the leading edge of the LMC, where ram pressure stripping, and the compression of the interstellar medium likely resulting from this, is at a maximum. At its core lies the compact star cluster R136 (approx diameter 35 light years)[4] that produces most of the energy that makes the nebula visible. The estimated mass of the cluster is 450,000 solar masses, suggesting it will likely become a globular cluster in the future.

[. . .]

The closest supernova observed since the invention of the telescope, Supernova 1987A, occurred in the outskirts of the Tarantula Nebula.


I also touched on briefly last summer on the discovery in the Tarantula Nebula of the most massive star to date, blue hypergiant R136a1 with the mass of 265 Sols.

All of this is here.
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