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The reason is simple: it’s meant for a different audience. Check out this USGS feature story for more on how it will contribute to Earth and Making this look like Google Maps was likely never at the top of the USGS’s todo list. Landsat 8 will circle the globe 14 times daily, will repeat its ground track every 16 days, and is expected to do this for at least five years. Should the satellite have failed before Landsat 8 arrived, 41 years of continuous Earth observations under the same program would have ceased. (One application is to monitor the health of certain kind of plants in farmer fields, for example.) It also has two thermal infrared sensor bands that will show the heat signature of Earthly features.įor Landsat, officials needed to launch this satellite because its predecessor ( Landsat 7)’s operational lifetime is in overtime. Its operational land imager can take pictures in nine spectral bands, which is important because certain types of vegetation or land features show up better in different light spectra. The truck-sized Landsat 8 weighs 4,566 lbs (2,071 kg) fully loaded with fuel, excluding the weight of the instruments. Helen’s eruption of 1980, and to respond to oil gas fires set in Kuwait during the Gulf War of 1991. In the past, Landsat pictures have been used to map the impact of the Mount St. We can see cities grow, observe forests shrink or deserts expand in response to human activity or climate change, and also gauge the impact of natural disasters.
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Long Earth observation programs show changes in the land over time.
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11, 2013 at Vandenberg Air Force Base, California. An Atlas-V rocket with the Landsat Data Continuity Mission (LDCM) spacecraft onboard is seen as it launches on Monday, Feb.
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