A UK startup wants to build a cosmic radio station in the Moon’s orbit to listen to radio waves from the early universe. Blue Skies Space has secured a contract from the Italian Space Agency to design a fleet of tiny satellites that could orbit the Moon and listen for signals from the cosmic “dark ages.” That’s the time before the first stars lit up, when the universe was mainly a swirling mass of hydrogen gas. Hydrogen atoms naturally emit radio waves at a very specific frequency: 1420MHz – known as the hydrogen line. When you stretch that signal across…
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