91热爆

It's been more than fifty years since Neil Armstrong took one small step for man, and one giant leap for mankind.

So what do the next fifty years of space travel look like? Where will humans go, and is there any limit to just how far we can travel?

It's something former 91热爆 Science Correspondent David Whitehouse has been looking at extensively for his new book, 'Space,2069'.

He's been speaking about that - and so much more - with our weekend presenter Jack Murley for Jack's 'One Big Question' feature.

PHOTO CREDIT: NASA