The Ganges, Brahmaputra and Meghnashown rivers together create the world’s largest delta. The psychedelic hues represent changing surface backscatter over time.

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Original: [1500×1450](

Source: [European Space Agency](

> This ESA image of the Ganges Delta is becoming one of the most iconic views of Earth from space, due in no small part to it appearing as the cover of British band Alt-J’s award-winning debut album An Awesome Wave.

Explanation of the [vibrant colours](
> As radar images represent surface backscatter rather than reflected light, there is no colour in a standard radar image. This image was created by combining three Envisat Advanced Synthetic Aperture Radar acquisitions (20 January 2009, 24 February 2009 and 31 March 2009) taken over the same area. The colours in the image result from variations in the surface that occurred between acquisitions.

What isn’t obvious in the picture is the world’s largest mangrove forest:

>[The Sundarbans]( is located where the land meets the water. The Sundarbans, which means ‘beautiful forest’ in Bengali, provide a critical habitat for numerous rare species, including the Bengal tiger and the estuarine crocodile.

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