Our granddaughters will be able to say that when they were young the European Space Agency put the first spacecraft on a comet which was 500,000,000 kilometers from earth. Today this is so incredible to us, just like the lunar landing was in 1969.
When I was a child, Newfoundland had its first television station and party-line phones. Later, besides watching men land on the moon, we saw the advent of personal computers, satellite communication, a space station and cellular phones. We've come a long way.
Imagine what will happen in our grandchildren's lifetimes because they are starting with a landing on a comet. They will live in exciting times!