In September 2023, a global seismic mystery began to unfold. Every 90 seconds, the Earth pulsed with a strange, low-frequency ...

Radio telescopes saw a strange burst of unknown energy in June 2024. Now we know it was from Relay 2, an early ...

Satellites that retire are deorbited into a graveyard orbit within 25 years of their missions ending. This is the case with ...

A relic from the dawn of the space age has suddenly—and unexpectedly—sprung back to life, catching the global scientific ...

A powerful and mysterious blast of radio waves that astronomers believed was a fast radio burst (FRB) from far beyond the ...

The study went on to note that a cause for the pulse could have been that it was struck by a small piece of space rock, known ...

Astronomers have finally deciphered the mystery of a peculiar bright burst in space, initially spotted using a large radio ...

As fascinating as bizarre signals from other planets can be—teaching us about earthquakes on Mars or auroras in the skies of Jupiter —sometimes even weirder signals come from weather extremes ...

A communications satellite out of commission since 1965 is chirping at the Earth in radio frequencies. What is happening? We ...

As to why Relay-2 suddenly emitted this signal, that’s a mystery. The scientists behind the detection believe that the satellite may have built up electricity over the years and then suddenly ...

For a year, researchers tracked a brief but exceptionally powerful radio signal that came from space and outshone every other cosmic source in the sky.