When we look out at our Cosmos, we look back in time.  We can't see distant galaxies as they are right now - we see them as they were when light left them and began its long journey to us.  This peculiar fact now lets us witness the vast history of our Universe, which I'll try to present in this talk.  I'll also discuss a strange discovery about time: that it doesn't flow at the same rate everywhere in the Universe, but is affected by speed and gravity.  Finally, I'll start (but hopefully not finish) a discussion about what all this means for our views about our place in the Cosmos.

David Bacon is a Reader in Cosmology at the University of Portsmouth.  His research focuses on how and why the Universe changes over time, as observed by astronomical surveys of distant galaxies.