A large comet that scientists think may have come from another solar system is currently streaking towards our sun. The 'alien' space rock, which at 3.7 miles (six kilometres) wide is the size of ...

With thousands of planets outside Earth's solar system, there's a pretty good chance that some of them have the conditions needed for life. If alien life does exist, scientists aren't quite sure what ...

Forget the sci-fi image of aliens as delicate, waif-like creatures - they’re probably absolutely massive, a scientist says. Fergus Simpson of the University of Barcelona says that - according to ...

There are millions of planets out there that could contain intelligent life. We can't look at them all, so which should we focus on? Using nothing but statistics, astronomer Fergus Simpson predicts ...

We haven't found any aliens yet, but just using statistical techniques, we can make some pretty good guesses about what they'll be like if we do. The answers may surprise you. Show more There are ...