The weather was bright and gusty, and bitingly cold. Hackney Downs was wide open and clear, so clear it made me wonder what it was before there was London. There were so many dogs being walked in Hackney Downs – I saw one person holding eight dogs – and a short-haired Australian Shepherd ran up to my laptop during the satellite pass. I stopped to pet her, and I wondered if her energy was having an influence on the satellite image.