Scientists Solve Major Mystery of Powerful Energy Beams Pointed at EarthThough our own galaxy, the Milky Way, is in a sleepy phase at the moment, many other “active” galaxies are bursting at the seams with energetic matter that is juiced up by the supermassive black holes that lurk at their centers. Intense interactions between the huge black holes and their gassy surroundings can cause radiant jets to erupt from these galaxies at close to the speed of light; some jets extend for more than a million light years into deep space.
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