Landsat 9 is an Earth observation satellite launched on 27 September 2021 from Space Launch Complex-3E at Vandenberg Space Force Base on an Atlas V 401 launch vehicle. NASA is in charge of building, launching, and testing the satellite, while the United States Geological Survey (USGS) operates the satellite, and manages and distributes the data archive. It is the ninth satellite developed in the Landsat program, and eighth to reach orbit (Landsat 6 failed to reach orbit). The Critical Design Review (CDR) was completed by NASA in April 2018, and Northrop Grumman Innovation Systems (NGIS) was given the go-ahead to manufacture the satellite.
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👉 Landsat 9 in the context of Landsat
The Landsat program is the longest-running enterprise that has acquired satellite imagery of Earth. It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched. This was eventually renamed to Landsat 1 in 1975. The most recent, Landsat 9, was launched on 27 September 2021.
The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture, cartography, geology, forestry, regional planning, surveillance, and education, and can be viewed through the U.S. Geological Survey (USGS) "EarthExplorer" website. Landsat 7 data has eight spectral bands with spatial resolutions ranging from 15 to 60 m (49 to 197 ft); the temporal resolution is 16 days. Landsat images are usually divided into scenes for easy downloading. Each Landsat scene is about 115 miles long and 115 miles wide (or 100 nautical miles long and 100 nautical miles wide, or 185 kilometers long and 185 kilometers wide).
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Landsat 9 in the context of Zaporizhzhia Nuclear Power Plant
The Zaporizhzhia Nuclear Power Station (Ukrainian: Запорізька атомна електростанція, romanized: Zaporiz'ka atomna elektrostantsiia; Russian: Запорожская атомная электростанция, romanized: Zaporozhskaya atmonaya elektrostantsiya) in southeastern Ukraine is the largest nuclear power plant in Europe and among the 10 largest in the world. It has been under Russian control since 2022. It was built by the Soviet Union near the city of Enerhodar, on the southern shore of the Kakhovka Reservoir on the Dnieper river. From 1996 to 2022, it was operated by Energoatom, which operates Ukraine's other three nuclear power stations.
The plant has six VVER-1000 pressurized light water nuclear reactors (PWR), each fueled with U (LEU) and generating 950 MWe, for a total power output of 5,700 MWe. The first five were successively brought online between 1985 and 1989, and the sixth was added in 1995. In 2020, the plant generated nearly half of the country's electricity derived from nuclear power, and more than a fifth of total electricity generated in Ukraine. The Zaporizhzhia thermal power station is nearby.