The universe is made mostly of dark matter and dark energy, and we don't know what either of them is
It's an unusual opportunity, a chance for so many people to share in the excitement and the fun of the fact that we may be on to hints as to what the Universe is made out of. I guess the whole point of a prize like this is to be able to get that out into the community.
Probably the single most important thing about the Nobel Prize for most people is whether they get the coveted parking space on campus.
I will say that growing up as a kid in an urban environment and having lived in cities all my life, the one achievement that everyone can look forward to is getting the perfect parking spot.
For almost a century, the Universe has been known to be expanding as a consequence of the Big Bang about 14 billion years ago. However, the discovery that this expansion is accelerating is astounding. If the expansion will continue to speed up, the Universe will end in ice.
So it's possible that someday, by understanding a little bit more about how the world works, it will come back to help us in some other way that will be surprising.
I was one of those kids who always thought that we should know how the world works around us.
You want your mind to be boggled. That is a pleasure in and of itself. And it's more a pleasure if it's boggled by something that you can then demonstrate is really, really true.
As a scientist, you feel a sense of team spirit for your country but you also have a sense of team spirit for the international community.
From our point of view, the most exciting thing would be if we discovered something really fundamental in our understanding was just off a bit - and that now we have a chance to revisit it.
It seemed like my favourite kind of job - a wonderful chance to ask something absolutely fundamental: the fate of the Universe and whether the Universe was infinite or not.
It is a tough choice between ending up in the cold or ending up in a fiery blast.
You don't want to come out with anything that's wrong, of course, in a scientific, you know, a major scientific announcement, and so you're being so careful trying to check, well maybe it's this, maybe it's that, you're looking at every possible thing.