Commercial imaging satellites tend to be big, expensive, and seriously high - tech, which is why there are fewer than a dozen in orbit today. (inc.com)
Since then, many far more sophisticated imaging satellites have gone up, providing scientists with a wealth of information. (discovermagazine.com)
Monsanto buys data from several older imaging satellites, he said, but is not a Planet Labs customer because it does not yet offer the infrared imagery needed to judge the health of plants. (cnbc.com)