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Astronomers discovered evidence of relativistic jet coming from the supermassive black hole in the heart of our galaxy (called Sagittarius A*). Jets of intensive radiation are often found coming from black holes that consume material from their surroundings. Sagittarius A* is not active at the moment, but its jet seems to push matter away from the black hole.
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Astronomers led by Byeong-Cheol Lee have made a groundbreaking discovery, detecting a brown dwarf orbiting the red giant HD 18438. With a radius of 89 times that of the Sun, HD 18438 is now the largest known star to be orbited by an exoplanet or brown dwarf.