“At the millimeter wave—between 30 GHz and 300 GHz—you’re always contending with the fact that the atmosphere is absorbing a lot of the signal that you’re trying to send out, which traditionally means ...

Mysterious ‘Wow!’ Radio Signal Might Finally Have an Explanation—and No, It’s Not Aliens The infamous signal recorded in 1977 might have been a laser-like beam of radiation from a hydrogen ...