Some watcher of the skies
We live in an age of astronomical marvels. Last year Europe’s Rosetta spacecraft made a daring rendezvous with the comet Churyumov-Gerasimenko, revealing a bizarre double-lobed mountain of ice and rock with landscapes of vertiginous crags and ashen scree slopes. In our image-saturated age it’s easy to forget that such views are only possible through the intermediary of sophisticated technology: cameras and computers and the spacecraft that carry them halfway across the solar system. And yet this is nothing new. Ever since the Italian mathematician Galileo Galilei first turned his telescope to the heavens in the autumn of 1609, advances in technology and great strides in knowledge have gone hand in hand.