Researchers Measure Dark Matter From the Farthest Reaches of the Universe as Seen 12 Billion Years Ago
Using a novel technique, scientists from the Nagoya University of Japan have observed dark matter from the farthest reaches of the universe. They revealed the nature of dark matter around galaxies as seen 12 billion years ago. Due to the finite speed of light, when scientists observe distant galaxies, they see them the way they were billions of years in the past. Consider an even more distant source galaxy than the target galaxy being studied for its dark matter. The gravitational pull of the foreground galaxy, including…