Astronomers may be able to identify possible Dyson swarms by looking for unusually cold, clean infrared signals around ...

If so, why haven’t they said hello? The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, it was the “canals” of Mars. Then ...

Unusual stellar remnants suggest the Milky Way might have eaten a galaxy called Loki billions of years ago, according to new ...