"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."
"Event horizon snapshot due in 2017" by Jonathan Webb for BBC News