What is the projection of theLandsat data? What happened to this data when it was imported into ArcGIS?

The projection of Landsat data is typically in the Universal Transverse Mercator (UTM) coordinate system. This system is widely used for satellite imagery because it allows for relatively small distortion of the earth's surface, making it ideal for mapping large areas.

When Landsat data is imported into ArcGIS, a few things happen:

1. The data is read and interpreted: ArcGIS reads the metadata associated with the Landsat data to understand the format, projection, and other characteristics of the data.

2. The data is reprojected: If the map you are working on in ArcGIS has a different projection than the Landsat data, ArcGIS will automatically reproject the data to match the map's projection. This ensures that the data aligns correctly with other layers on your map.

3. The data is displayed: ArcGIS will display the Landsat data as a layer on your map. You can then manipulate the layer's properties, such as its color scheme and transparency, to suit your needs.

4. The data is stored: ArcGIS stores the imported Landsat data in its database, allowing you to access and use the data in future mapping projects.