![]() ![]() The difference between existing VLBI facilities and the EHT is the sheer geographical scope of the EHT project, its extension to the shortest observing wavelengths, and addition of the unprecedented collecting area enabled by ALMA. This technique, called Very Long Baseline Interferometry (VLBI), is the same process that enables telescopes like the Very Long Baseline Array (VLBA) and the Atacama Large Millimeter/submillimeter Array (ALMA) to achieve such amazing power and resolution. The EHT derives its extreme magnifying power by connecting widely spaced radio dishes across the globe into an Earth-sized virtual telescope. The Event Horizon Telescope (EHT) is a worldwide network of radio astronomy facilities linked together with the goal of studying one of the most exciting objects in the known universe - the edge of a black hole. To learn more about radio telescopes, arrays, and the key to the EHT - Very Long Baseline Interferometry - read here.Īdditional details are on the Joint ALMA Observatory website and the ESO website. Though astronomers have long studied the impact of black holes on the universe, no one has ever imaged the actual point of no return, where matter and energy cannot escape a black hole - the so-called event horizon.īy combining the collecting area of ALMA and other millimeter-wavelength telescopes scattered across the globe, the EHT may finally achieve that goal. ![]() These supermassive black holes exert tremendous influence on their home galaxies, especially when they gorge on gas and stars. Other black holes, millions to billions of times more massive than our Sun, reside at the centers of galaxies. The collapsing core from this explosion becomes so dense its gravity prevents even the fleeting particles of light from escaping its grasp. They can be forged when star at least five times the mass of our Sun dies a spectacular death in a supernova explosion. On April 5, 2017, a team of astronomers, engineers, and technicians will attempt something unprecedented they will link together a worldwide network of radio telescopes - including the Atacama Large Millimeter/submillimeter Array (ALMA), with the goal of imaging the outer edges of a supermassive black hole.īlack holes are reality-bending concentrations of matter in space. ![]()
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