Walking on the Moon

When I woke up this morning, an excerpt from an old song by The Police was washing through my head.

Giant steps are what you take
Walking on the moon
I hope my legs don't break
Walking on the moon

Imagine my surprise when I turned on my car radio: today is the 50th anniversary of the launching of Sputnik 1, the first artificial satellite to orbit the earth. This in turn sparked the space race, culminating with Neil Armstrong walking on the moon in 1969. And so - the pun is irresistible - we have come full circle.