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A New Window on the Expansion of the Universe

Astronomers at the University of Tokyo have used gravitational lensing to measure how fast the universe is expanding, adding weight to one of cosmology's most intriguing mysteries. Their technique exploits the way massive galaxies bend light from distant quasars, creating multiple distorted images that arrive at different times. The measurement supports recent observations showing the universe expands faster than predictions based on the early universe suggest, strengthening evidence that the

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