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

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 ...

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

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

This ought to cause a wave of panic. Back in 2023, scientists were perplexed by a mysterious seismic signal that shook the world every 90 seconds for nine days. Now, two years later, satellite ...

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 ...

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 mysterious signal that appeared to be emanating from Proxima Centauri put scientists on a hunt to track down its source. What they found was that it had a decidedly earthbound origin.