Mike McRae reports at Science Alert,
For the past two decades, NASA has continuously kept an eye on our planet's biosphere as it pulses and ebbs with the seasons.Read more here.
The data is invaluable to researchers, but the time-lapse imagery also provides us with a breathtaking visualisation of Earth's most unique characteristic – life.
The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) was launched in 1997, and spent the next 13 years looking down on us from its orbit 700 kilometres (about 435 miles) overhead.
The satellite's purpose was to collect data on the bio-optical properties of our planet's land masses and oceans. As it did so, it watched Earth's living colours change with the seasons.
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