From Stanley Schaetzel
Australia has several satellites, so why was it not included on your map of satellite-owning nations (8 September, p 45)?
• The map showed countries with five or more satellites, and the database we used listed four for Australia. We have since learned that Australian company Singtel Optus then owned five, including one leased to another operator. A sixth was launched on 6 October.
Westleigh, New South Wales, Australia
