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\"This has been our first chance to see the inner workings of black holes and to test a fundamental prediction of Einstein's Theory of General Relativity. Not only the existence of a shadow that indicates a point of no return -- or an event horizon -- but also the size and shape of that shadow,\" Feryal Ozel, an astrophysicist at the University of Arizona who was the modeling and analysis lead on the project, told ABC News.

\"It's a dream come true, on many levels,\" Ozel said. \"Something I've been working on for many, many years, trying to build a physical model of a black hole environment and predictions, and the opportunity to study the hearts of black holes is amazing. This kind of resolution in astronomy is unprecedented. This is up to a million times better than some other telescopes.\"

It wasn't until late summer 2018 that \"we knew we had an image that looked like what we hoped it would look like. Just collecting data, just getting the data from the South Pole -- just that took six months. It was close to a year and half we just worked on it,\" Ozel said.

Doeleman added that the photo was consistent with the simulations and predictions based on Albert Einstein's calculations.

The remotest of our EHT sites, the South Pole Telescope, requires the most dedication but provides some of the most valuable data. Thanks to Arizona's Junhan Kim and Dan Marrone, it is part of the array. (Image credits: Junhan Kim and Joshua Montgomery) pic.twitter.com/l8vQatnMHj

— Feryal Ozel (@feryal_ozel) April 5, 2019

This image of the Submillimeter Telescope on Mt Graham, as captured by the late U Arizona astronomer Dave Harvey, makes my heart flutter. SMT played a crucial role in obtaining the first image of a black hole with the EHT. pic.twitter.com/7Z4nWTGRdI

— Feryal Ozel (@feryal_ozel) April 3, 2019

The EHT project embarked on a 10-day mission in April 2017 to \"capture the image of the supermassive black hole at the center of the Milky Way galaxy,\" according to an NSF press release at the time.

\"Obtaining an image of a black hole is not as easy as snapping a photo with an ordinary camera,\" the National Radio Astronomy Observatory, a U.S. research center, wrote on its website. \"The supermassive black hole at the center of our galaxy, called Sagittarius A*, has a mass of approximately four million times that of the Sun, but it only looks like a tiny dot from Earth, 26,000 light-years away.\"

There's more discovery to come: the EHT team hopes to reveal a photos of the black hole in our own galaxy, Sagittarius A*, at a later date.

\"The black hole at the center of the Milky Way, our own galaxy, we're still analyzing that. We are hoping to have images and perhaps changing images. We want to do further tests of general relativity with what we have,\" Ozel said.

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