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Originally Posted by 01101001
50 years of spaceflight-enabled hunting?
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In 1958 David Finkelstein described event horizon mathematically using Eddington-Finkelstein coordinates. This brought black holes from the realm of speculation into a possibility and into a theory.
Quote:
Originally Posted by 01101001
Or has it been so nailed before this?
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AFAIK not yet, I think observations of Sgr A* have been more or less indirect so far. Sgr A* is fainter than expected in X-ray and Chandra needs to have a long exposure time to image it. Chandra took a 164-hour exposure of the area few years ago. Maybe this time they have imaged it with an ultra-long exposure time?
This is pure speculation of course, but all in all this sounds like the news could be a black hole. And Sgr A* being a probable candidate, because AFAIK other classes of BHs have already been found in Milky Way (stellar & intermediate).
But but... it could as well be something completely different.