As Nicolas Roeg’s enigmatic, unclassifiable film – in which David Bowie plays an alien visiting Earth – turns 50, we look back at Tom Milne’s deciphering of it. From our Summer 1976 issue.

Humans often imagine extraterrestrial life as biological creatures similar to animals or people. However, some scientists ...

If someone told you there’s a place in Colorado specifically built for watching aliens, you’d probably assume it was a joke.

As per a new study, Dyson spheres around faint stars in the galaxy could offer new techno-signatures clues.

Ever since physicist Freeman Dyson first proposed the concept in 1960, the "Dyson sphere" has been the holy grail of ...

What: SETI Institute Artists-in-Residence present Exoplanetary Poetry, an art-science collaboration that trains artificial intelligence on exoplanet atmospheric chemi ...

Looking for molecular evidence of life on other worlds is tricky, but a test based on the reactivity of carbon compounds ...

In Amiri’s calculations, Dyson spheres around white dwarfs tend to produce cooler, fainter thermal emission that peaks in the near- to mid-infrared, while M-dwarf cases can radiate more strongly but ...

Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

Beyond that, in the decades to come, we might be able to see the colours of an exoplanet’s surface, and determine if plant life might be present there. And then we can search for changes in a planet’s ...

Shaped by a different biology or culture, other intelligent civilisations – if they’re out there – might understand the ...

We might as well get this out of the way first, to preempt any swooning by the milquetoast wing of the Democratic Party: Yes, abolishing ICE would leave immigration statutes on the books, and those ...