Pop culture is full of references to messages from outer space. Some of them were friendly attempts at communication, such as ...

Astronomers have been trying to detect atmospheres on planets orbiting TRAPPIST-1, but bursts of radiation from the star make this challenging ...

Satellites that retire are deorbited into a graveyard orbit within 25 years of their missions ending. This is the case with NASA’s Relay 2 satellite, which took off in 1964 until its transponders ...

The universe is a vast and strange place, filled with astronomical phenomena that challenge everything we think we know about space. Despite rapid advances in technology and space exploration, ...

Tony Tyson’s cameras revealed the universe’s dark contents. Now, with the Rubin Observatory’s 3.2-billion-pixel camera, he’s ...

First thought to have originated from a distant cosmic object, the short and intense signal was actually coming from much closer to home.

Space & Spaceflight NASA Satellite That’s Been Dead for 57 Years Sends Mysterious Signal to Earth Relay-2 emitted a powerful fast radio burst that lasted for less than 30 nanoseconds.

A brief but extremely powerful radio signal thought to have coming from deep space has now been traced to a dead NASA satellite in Earth orbit. Relay 2 was one of a pair of experimental ...

Astronomers Detected a Mysterious Radio Burst. It Turned Out to Be From a Dead NASA Satellite The signal detected last year came from Relay 2, a communications satellite that has been defunct ...

When huge stars are denied a glorious death, something more brutal occurs, and you get mysterious signals known as fast x-ray ...