Don’t expect a straightforward timeline, because continuity is a mess with the Alien and Predator timelines (even if, as in this list, you choose to ignore tie-in comics, novels, and games). Predator: ...

Planets that once lived only in pulp novels and movie concept art are now turning up in real data. Astronomers are not just finding distant worlds, they are cataloguing places with molten surfaces, ...

Within the lifetimes of today’s teenagers, some of the world’s most respected researchers now say the discovery of alien life is not just possible but likely. The claim that we could confirm life ...