“There are roughly 400 billion land pixels in a single [Landsat] global mosaic.” (With at least one image of every location on Earth per season every year, the entire 43-year Landsat record contains more than 50 trillion pixels.)


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


“Landsat is history’s longest-running Earth imaging project. Its enormous data set cements it as an industry standard.”


“Landsat 8 imagery is an incredibly powerful resource. It is some of the most valuable open data produced by the US Government. Our partners rely on Landsat data for everything from evaluating droughts to tracking conflict.”


“Landsat’s work is epic in scale. In 43 years, it has amassed over a petabyte of data, with over 4 million scenes and counting.”


“Landsat sees the earth in a unique way. It takes images of every location in the world to reveal earth’s secrets, from volcanic activity to urban sprawl.”


“Landsat 8 is an incredible resource for global change research and has been used in a diverse array of scientific endeavors including the monitoring of deforestation, population growth, and glacier recession.”


“We hope to accelerate innovation in climate research, humanitarian relief, and disaster preparedness efforts around the world by making Landsat data readily available near our flexible computing resources.”


“Many of our customers’ work couldn’t be done without Landsat.”


“Because of Landsat’s global purview and long history, it has become a reference point for all Earth observation work and is considered the gold standard of natural resource satellite imagery.”


“Tropical deforestation plays a big role in global climate cycles… without the transparency of Landsat satellite data is difficult to put your finger on changing trends.”


“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.”


“Sentinel-2a is essentially Europe’s version of the American Landsat mission.”


“Landsat and SRTM are my eyes on the ground. Without them I am totally blind. They are great gifts to humanity.”


“The economic value of just one year of Landsat data far exceeds the multi-year total cost of building, launching, and managing Landsat satellites and sensors.”


“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.”


“Landsat is widely considered to be a crucial national asset, comparable to the satellite-based GPS system and National Weather Service satellites. Ready access to Landsat images supplies a reliable common record of Earth conditions that fosters the mutual understanding of environmental challenges by citizens, researchers, and decision makers worldwide.”


“Since late 2008, when Landsat data was made available to all users free of charge, over 22 million Landsat scenes have been downloaded through the USGS-EROS website—and the rate of downloads is still increasing.”


“Those are the Islands of the Four Mountains… The Landsat image shows them on June 8, 2013… One of the things I love about science is how it gives us perspective.”


“There are more than 800 billion Landsat-derived pixels of land in our imagery. If we printed out just our Landsat-based world map at poster resolution, it would cover two acres.”


“The advent of Landsat data enabled an unparalleled increase in our understanding of the Earth system.”


“Now that the entire Landsat archive is freely available it has become economically feasible to monitor disturbance over large areas using satellite time series.”


“Remote sensing with satellites such as Landsat and sensors such as MODIS allows scientists to conduct a range of studies they wouldn’t otherwise be able to.”


“Data from Landsat and the MODIS sensor are well-suited to help people make informed policy decisions about ecosystem health, water management, agriculture and much more.”


“By unleashing the power of our vast and open data resources, the Climate Data Initiative helps spark private sector innovation and will leverage resources for those on the front lines who are dealing with climate change. We are pooling into one place data from across the federal government to make it more accessible to the public and we hope our efforts will inspire other countries to follow suit.”


“Population in 1972… was around 4 billion people. When we launched Landsat 8 there was 7 billion people on the surface of the planet. Due to those factors our land use and land cover has changed dramatically and continues to change and we use the information and the images from the Landsat satellites to understand the change, to study the trends, and to predict the future.”


“We’re happy to see that the Agribotix imaging system performs so well when compared to Landsat 8, one of the highest quality land imaging satellite systems…”


“Landsat 8 represents yet another substantial advance to continuing a 40 year land data record, essential to understanding the Earth’s biosphere, anthropogenic changes to land use and land cover, the terrestrial carbon cycle, and the consequences for climate and biodiversity. This important extension to the Landsat series, the Landsat 8 mission, was achieved, through an outstanding interagency and industrial partnership, effectively managed to achieve breakthrough improvements in satellite and sensor performance.”


“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.”


“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 data.”


“The Landsat satellite series has proven to be a perfect match to the needs of modern irrigated agriculture and water resources management.”


“The Landsat science community is giddy at the results they’re seeing from the latest Landsat instrument. It’s that much better than the last one.”


“When fighting broke out, the [New York Times] graphics team pulled up images from [the] Landsat 8 satellite to look for changes on the ground.”


“There is a sensor in the Landsat satellite which measures the intensity of the reflected radiation back into space. What if we could use satellite imagery from the Landsat program to find fossils?”


“Giant kelp forests are especially sensitive to environmental changes and have a history of undergoing abrupt, dramatic declines and increases in response to a variety of climatic and human-induced factors. The application of our remote sensing methods to the long-term (continuous since 1984), high frequency (~ once per month) global coverage of Landsat imagery is providing a unique opportunity for studying these dynamics over spatial and temporal scales that were previously impossible to examine. The recent decision to make Landsat data available to the public at no charge has greatly facilitated our use of this phenomenal resource for investigating giant kelp forests and is proving to be an invaluable tool in marine spatial planning and evaluation of recently established no-take marine reserves.”


“The USGS’s Landsat mission has an incredible 40-year record of the planet’s changing landscape, with virtually every spot imaged every eight days. It’s an incredible scientific asset.”


“Landsat is the oldest continually operated program of its kind: Its satellites have been capturing images of the Earth since the Nixon administration.”


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


“When the archive was opened, there were more Landsat images outside it than in it. Many images were retained by the global network of receiving stations. An effort to consolidate these has added more than 3 million images to the repository since 2010; agreements are in place for a further 2 million to be ingested.”


“Usage rocketed in 2008, when Landsat made its images free. More than a million images were downloaded in the first year, compared with a previous annual high of 25,000 images sold. More than 20 million images have been downloaded since the archive opened and the rate continues to increase.”


“A new era of open-access satellite data has arrived. In 2008, The U.S. Geological Survey released for free to the public its Landsat archive, which dates back to the 1970s and is the world’s largest collection of Earth imagery.”


“Landsat data gives us a fuller picture of the planet we live on and the resources humanity needs to survive.”


“In the world of water resource management, Landsat has played a key role in providing objective and continuous data for the United States, particularly in the arid west. Water-related benefits of Landsat imagery are also reaped far beyond the United States’ borders in countries such as Chile, Australia, Morocco, Sudan, and Venezuela, which are using Landsat data to make informed decisions regarding natural resource allocation and use.”


“The Landsat mission has been monitoring Earth from orbit for more than 40 years. It is by far the longest continuous record of the surface of the planet, and certainly one of the most valuable data sets in existence.”


“Fire perimeters collected using Landsat imagery are accurate, timely and cost-effective.”


“Landsat is currently the only satellite program to provide a consistent, cross-calibrated set of records stretching back over more than four decades, which in turn means the program occupies a key position in the provision of terrestrial essential climate variables.”


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


“The economic and scientific benefits to the United States of Landsat imagery far exceed the investment in the system.”