I am Neil deGrasse Tyson
If a space traveling entity approached you with an opportunity to visit any celestial object from any distance and allow you bring one scientific instrument of your choosing, where would you go and what would you bring? The size of the instrument does not matter, but keep in mind the farther away your object of choice is, the more it may have changed (i.e. if you hoped to visit the recently discovered supernova SN 2011fe, you would arrive 21 million years after the event).
neiltyson: I'd bring my iPhone, as the most compact representation of modern culture there is. And I'd visit a civilization on a galaxy 65 million light years away. Assuming I can get there instantaneously, I would look back to Earth with their presumably super telescopes and witness the extinction of the dinosaurs - the light of which is just now reach them.
Neil deGrasse Tyson interviewed by the readers of Reddit. Buried in the answers is the link to this excellent video interview with out-of-character Stephen Colbert.
