A network of nine radio telescopes, dotted around the globe, is set to take the first ever picture of a black hole's event horizon in 2017.
The project, called the Event Horizon Telescope, has completed most of its technical preparations as well as extensive theoretical calculations.
It will focus on Sagittarius A*, the black hole at the Milky Way's centre.
Speaking at an astronomy conference in Florida, EHT team member Feryal Ozel said all the elements were in place.
She told BBC News: "We're almost there. The phasing in of the instruments has been done, the receivers are in place and the theoretical work has been done.
"There are quite a few challenges that need to be overcome to take a picture of a black hole - it's something that's extremely small in the sky. But what we're hoping for is a full array observation in early 2017."
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