Standing above the clouds and taking in the dramatic rock formations and giant, other-worldly telescopes, I tell my friend Jeremy – who I met just three days ago – that I think this must be what Mars looks like.
We are 2,400m above sea level at the Roque de los Muchachos viewpoint in La Palma on the Canary Islands, which gives a breathtaking panoramic view of a giant 1,500m-deep volcanic crater, covered with trees and stunning volcanic rock formations.
Telescopes on Roque de...