" What has been his cause for searching the heavens day and night, for testing the limit of his reach hour by hour like a man trapped inside an expanding balloon? The reasons were as various as the days they consumed: to grasp the workings of the universe, to find something more beyond earth's fretful compass, to put his name to a discovery and secure fame's immortality, to be able to point to a map and proclaim simply: here I am. "