Sagittarius A* — Topic Summaries
AI-powered summaries of 3 videos about Sagittarius A*.
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First Image of a Black Hole!
The first direct image of a black hole—released by the Event Horizon Telescope collaboration on April 10, 2019—shows a glowing ring of plasma...
How did they actually take this picture? (Very Long Baseline Interferometry)
The Event Horizon Telescope’s black-hole images are possible only because Earth-based radio observatories act together like an Earth-sized telescope,...
Was the Milky Way a Quasar?
The Milky Way’s central black hole, Sagittarius A*, may have had a much more recent “active” episode than astronomers assumed—one that could have...