Using the ALMA telescope in Chile and Einstein's theory of relativity, scientists observed a young galaxy in the early universe that is invisible in nearly every wavelength.
Researchers have finally revealed the details of an extremely distant and dark galaxy that's been nearly impossible to see — until now.
"Very distant galaxies are real mines of information about the past and future evolution of our universe," lead author Marika Giulietti , an astrophysicist at the International School of Advanced Studies in Italy , said in a statement ."However, studying them is very challenging. They are very compact and therefore difficult to observe. Also, because of distance, we receive very weak light from them.
Because of the vast amount of interstellar dust in the way, however, this particular galaxy was hard to see, even with gravitational lensing. So the researchers turned to the Atacama Large Millimeter/submillimeter Array , a set of 66 radio telescopes in Chile. Because of the way dust absorbs and reemits light, submillimeter telescopes are often used to observe dusty celestial bodies.
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