How many LANDSAT satellites are there?

The correct answer, which indicates that there are 8 LANDSAT satellites, is based on the history and operation of the LANDSAT program. The LANDSAT program began in 1972 with the first satellite, LANDSAT 1, and has since launched several more satellites intended to capture Earth’s surface in various spectral bands to assist in land monitoring, agriculture, forestry, and urban planning.

Each LANDSAT satellite has contributed to advancements in remote sensing technology, and the series has been instrumental in providing consistent, long-term data on changing landscapes and environmental conditions. Currently, LANDSAT 8, launched in 2013, is the most recent operational satellite in the program. Although earlier versions like LANDSAT 5 and LANDSAT 7 have also played significant roles, they are now decommissioned.

As of now, the current operation is primarily attributed to LANDSAT 7 and LANDSAT 8, while LANDSAT 9 was launched in September 2021, bringing the total to 8 active missions (considering all historical missions that have contributed to the ongoing series).

This understanding of the LANDSAT program encapsulates why the number identified in the selection is accurate, aligning with the actual number of satellites launched and their operational status.