“Landsat makes it possible to compare images over almost 5 decades and makes the role of climate change unmistakable in this incredibly beautiful mountainous part of Alaska.”


“I’m grateful that NASA, USGS, and scientists like William Pecora had the foresight to begin collecting Earth observations a half century ago.”


“We have mapped then analyzed the area of forest converted each year to industrial oil palm and pulpwood plantations from 2001 to 2016, looking mainly at land under company management – that is, concessions. We use LANDSAT satellite imagery to monitor the annual expansion of plantations. We combine this information with annual maps of forest loss also derived using LANDSAT satellites by Matthew Hansen’s research group at the University of Maryland. The Hansen dataset, as we call it, produce…


“What a Landsat it is! The data are strikingly good and the delivery system is flawless. Landsat 8 arrives just as Landsat data use has exploded under the free data policy and the ability to deliver geolocated and atmospherically-corrected products… new and exciting applications are being revealed daily.”


“With the full Landsat record available, we can finally look at really big problems, like the global carbon cycle.”


“While Landsat instruments are fundamentally just electro-optical transducers that ingest photons and eject a digital bit stream, this transduction relies upon the state of the art in numerous technologies including optics, precision electromechanics, detectors, advanced materials, cryogenics, and signal processing.”


“Landsat 5 is kind of like the (Energizer) bunny — it just keeps running and running.”


“Landsat, now one of the largest and most powerful tranches of Earth-science data, is an invaluable scientific resource.”


“Having all of this [30 m] Landsat data available more or less globally since 1984 will keep glaciologists busy for some more years, if not decades.”


“From a valuation standpoint, Landsat is an extremely valuable public good just in its direct use—let alone the economic value of all the indirect uses built on the direct data.”


“Landsat 8 can collect more than 700 images per day—14 times as much as in the 1980s.”


“The US satellite series—its current flier is named Landsat 8—pioneered the science of monitoring the planet from orbit. It has assembled a continuous record of the world’s fluctuating features that stretches back more than 40 years. In satellite terms, it is the gold standard.”


“We are in this unique position where we have ice core records from these mountaintops, and Landsat has these detailed images of the glaciers, and if we combine those two data sets, we see clearly what is happening.”


“Whether it’s since 1985 or 2000, we see this greening of the Arctic evident in the Landsat record.”


“You can see the changes of your orchard over time & over space, and by measuring the canopy temperature [with Landsat] you can see whether the canopy is in balance with the rest of the environment around the trees.”


“The resolution of Landsat imagery and the size of the Landsat database enables critical insight for scalable, high resolution flood detection in several key ways… This increased resolution is particularly critical in urban areas.”


“An engineering degree opens many doors. It has served me well.”


“We would not have been able to complete this research without Landsat’s free and open data policy.”


“What makes this [Landsat 8] mission team special is the fervor they brought to task. They were challenged to retain the historic data continuity, yet take advantage of new technology while balancing cost and complexity. Few, if any, missions face such a challenge with such consequences on the line. After more than a decade of dedication, this Team launched a new sensor that was more sensitive and robust than previous sensors, and provided not only data continuity but even more and better d…


“I don’t think there’s any question about how important and how valuable MSS is.”


“I really believe that Landsat data made a change in how we perceive global change. All of the things we have done so far would not have been possible without the unique Landsat dataset”


“Last year the White House found that GPS, weather satellites, and Landsat are the three most critical types of Earth-orbiting assets for civil applications, because they’re used by many economic sectors and fields of research.”


“The long, consistent view of Earth from space provided by Landsat sparks advances in science, enables more efficient natural resources management, and promotes profitable applications of the data in commerce and industry. In step with the National Research Council and other objective reviews, the non-federal Landsat Advisory Group has found that the broad benefits of Landsat far outweigh the cost.”


“Very importantly, big data and its use for societal good is based on really progressive data policies. The Landsat sensor has 40 years of data in the archive and it is available to anyone on the planet.”


Landsat 9 bw
Landsat 9 bw
Landsat 9 bw

The NASA/USGS Landsat Program provides the longest continuous space-based record of Earth’s land in existence. Landsat data give us information essential for making informed decisions about Earth’s resources and environment.