• Penny Mordaunt told MPs during business questions on 8 December 2011 that earth observation satellites were "critical" in helping developing countries manage humanitarian and environmental crises.

    BBC: Business questions

  • It can acquire high-resolution data, especially in the steeply sloping coastal areas, where the radar altimeters flown on many other Earth observation satellites struggle to see important details.

    BBC: Laser satellite records ice loss

  • At the moment, the earth-observation satellites which employ microwaves generally use short-wavelength radiation, because this provides more detailed images.

    ECONOMIST: Archaeology: What lies beneath | The

  • Satellites support phones, pagers, television broadcasts, Earth observation and the global positioning system.

    ECONOMIST: SpaceShipOne

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