Hello Koleshjr,

Data provided in the competition are satellite images taken from the Sentinel-2 satellite. They are like typical images, but instead of having only 3 bands(RGB), they have 12 bands(detail). Just like RGB, these bands capture different information about the data depending on how the objects depicted in the image interact with the light.

You can refer to this documentation for more details about how different bands provide different information and how remote sensing(in our case, satellite imagery) works and captures the data.