Pair of supermassive black holes discovered on a collision course

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Astronomers have spotted a pair of supermassive black holes on a collision course in a galaxy 2.5 billion light-years away. Coincidentally, the pair will begin producing gravitational waves in roughly 2.5 billion years, the researchers estimate. The duo can be used to estimate how many supermassive black hole pairs are detectable in the nearby, present-day universe and when the historic first detection of the background 'hum' of their gravitational waves will be made.
via Science Daily
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Holes in the Universe sharpen cosmic measurements

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Regions of the Universe containing very few or no galaxies -- known as voids -- can help measure cosmic expansion with much greater precision than before, according to new research.
via Science Daily
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New terahertz sensors work at room temperature, unlike current technology

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Researchers have developed an ultra-sensitive light-detecting system that could enable astronomers to view galaxies, stars and planetary systems in superb detail.
via Science Daily
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