The European-led LIFE mission aims to use spacecraft in formation to look for biosignatures.

As promised, Valve has released top-down co-op shooter Alien Swarm on Steam, free of charge. Have fun! https://kotaku.com/valve-unleashes-an-alien-swarm-on-steam ...

A US fighter pilot who was shot down over Iran in April described seeing a remarkable 'jellyfish-like' drone formation before ejecting from his F-15.

I do so love an ostentatious comet. As I wrote in a recent “The Universe” column, when these dusty ice balls are billions of kilometers from the sun, they’re frozen solid. But as they near our star on ...

Our world is threatened with an imminent invasion from a swarming alien menace. And there is only one hero brave enough, smart enough and tough enough to fight back - Ben Tennyson!