What happens when you’re hit by a marshmallow moving at light speed

Last week I made a flippant comment on Facebook about the kinetic energy a marshmallow would have were it accelerated to lightspeed. I knew it would be giganormous. Needless to say, being a bit of a geek, I then had to go and figure out exactly what it was. First, though, a few words of … More What happens when you’re hit by a marshmallow moving at light speed

Would aliens attack us, Independence Day style?

The idea of aliens arriving and promptly attacking us, Independence Day fashion, recently popped up again largely on the back of another Independence Day movie. But it’s also been offered as a warning by no less a person than Stephen Hawking. And when Hawking says something – well, it pays to listen. Is it true … More Would aliens attack us, Independence Day style?

I’m sceptical that the SETI signal is actually advanced aliens

I think it’s unlikely that the radio signal detected from the star HD 164595, just 95 light years distant, is an alien broadcast. That doesn’t mean I doubt life exists outside the Earth. I think it’s likely it does – maybe in our own solar system, underground on Mars or under the ice crust of … More I’m sceptical that the SETI signal is actually advanced aliens

Why super-powers should be all or nothing in sci-fi

I have never completely understood the latest sci-fi fixation with ‘super powers’, where the main protagonist is just some ordinary person who just happens to be able to go invisible, or read minds, or teleport (but not all three). Inevitably this singular ability then becomes the ‘gimmick’ on which plots are hung. To which I … More Why super-powers should be all or nothing in sci-fi