Interesting

• QGIS Map Examples – gallery of maps created in QGIS

Anything About Satellites

• Synthetic Aperture Radar (SAR) – a good description of SAR imagery and it’s use
• Sentinel Hub Playground – options to view Sentinel -1, Sentinel -2 L1C, L2A, Landsat 8, DEM , MODIS. Easy to use, easy to scroll thru available dates.

Visual References:

• Maps – State Plane Coordinate Systems (SPCS) – Tools – National Geodetic Survey (noaa.gov)
• Worldview Snapshots (nasa.gov)
• EOSDIS Worldview (nasa.gov)