Last year, scientists detected a mysterious, powerful burst of radio waves originating from within our galaxy. Now, astronomers think it was caused by a long-dead NASA satellite — but they're not sure how it happened.
Relay 2 blasted off in 1964, but the communication satellite went offline in 1967 after its two onboard transponders failed. Almost 60 years later, in June 2024, the satellite produced an unexpected signal, the researchers said in a new preprint study, which was posted June 13 to the server arXiv and has not yet been peer reviewed.
