Watched

('## What is it?\n\nWatched answers a slightly unsettling question: what looked down at this spot in the past week? Pick a place and the page works out which catalogued satellites passed overhead, then finds the images they took. It runs in the browser from public orbit data: about 16,900 tracked objects from CelesTrak, refreshed every six hours.\n\nA few honest limits are spelled out on the site: archive images arrive hours to a couple of days after capture, so the newest passes may not have a photo yet; the best resolution is roughly 10 metres per pixel, so a car is about one pixel; and military or spy satellites are mostly absent from public catalogues.\n\n## How to play?\n\n- Type a place, use your location, or click the globe to drop a pin.\n- Try the shortcuts for Area 51, Central Park or Giza, or hit Surprise me.\n- Read the list of passes and open the pictures each satellite actually captured.\n- Press ? for the full explanation of labels, coverage and privacy.',)