Date- Feb 09 Source- http://www.esa.int/esa-mmg/mmghome.pl 'The European Space Agency is developing a network of satellites the European Data Relay Satellite System (EDRS) that will use geostationary satellites to communicate with both ground stations and other satellites whose lower orbits restrict the time that they can see any one ground station. Allowing low-Earth orbit satellites to deliver data continuously, instead of storing it on board for transmission while overflying a ground station, will increase the timeliness with which we receive data improving global communications, navigation and Earth observation. By developing this satellite infrastructure, ESA will improve many key services, such as the monitoring of earthquakes, forest fires and floods, aircraft navigation and the observation of sea-ice zones. On-demand satellite data will be available at the right place and at the right time improving and even saving lives.'
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