<![CDATA[ Astronomers have spotted the most distant and brightest "space laser" ever seen, and it's blasting from a galaxy collision that occurred when the universe was half its current age. ]]>
Cosmic lasers, or astrophysical masers, are natural sources of coherent electromagnetic radiation that can be found in space. They are typically produced in environments with high densities of gas and dust, such as star-forming regions or around supermassive black holes, and can provide valuable insights into the physical conditions of these cosmic environments.