Astronauts have been stuck in low-Earth orbit, boldly going nowhere. American attempts to kick-start a new phase of lunar exploration have stalled amid the realisation that NASA's budget is too small for the job.

When I was a student, the laws of physics were regarded as completely off limits. The job of the scientist, we were told, is to discover the laws and apply them, not inquire into their provenance.

No planet is more earth-like than Earth itself, so if life really does pop up readily in earth-like conditions, then surely it should have arisen many times right here on our home planet? And how do we know it didn't? The truth is, nobody has looked.

Should we find a second form of life right here on our doorstep, we could be confident that life is a truly cosmic phenomenon. If so, there may well be sentient beings somewhere in the galaxy wondering, as do we, if they are not alone in the universe.

If I'm writing for a particular artist, I definitely think about their past records, pay attention to the type of tempos that they like. If I have the privilege of actually being in the session with the artist, I just like to have a conversation with them.

When I'm writing, I can always play around with tense. I can always make past present. I can always kind of manipulate, and I can always be delusional in a way that's completely self-serving. With film, it's like, the camera can't really lie. It can manipulate to a certain extent.

Creativity is not just for artists. It's for businesspeople looking for a new way to close a sale; it's for engineers trying to solve a problem; it's for parents who want their children to see the world in more than one way.

I consider myself very fortunate indeed to have created a character which has captured the imagination and enthusiasm of so many children worldwide. They are my family, and Spot belongs to them all.