Possible Clues:

• A very long way to analyse words and a number
• Capers about far in the distance
• Analyse carbon to get measure of the universe
• Three-and-a-bit light-years
• Three+ light-years
• Analyse a hundred and nineteen million million miles
• Work on structure, and velocity of light, to get measure of universe
• About to analyse first something that's an astronomical length
• Huge distance out in space, right?
• Unit equivalent to 3.26 light years