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What is a DAAC? The Distributed Active Archive Centers (DAACs) are part of NASA's Earth Observing System Data and Information System (EOSDIS). Each of the twelve data centers serves one or more specific Earth science disciplines and provides its user community with data products, data information, u...

How do I know if specific areas of interest to my study are already available for download through NASA? Users who are interested in accessing data purchased under CSDA are encouraged to use the SDX tool first to verify whether the needed data are already available. All data purchased and future ev...

What copyright notice do I use for commercial data?

Please see the Copyright section on individual vendor pages:

• Planet
• Spire
• Maxar
• Teledyne Brown Engineering
• Polar Geospatial Center
• Airbus U.S.

How do I become a NASA-funded researcher? Who classifies as a NASA-funded researcher? Who classifies as a U.S. Government-funded researcher? What commercial data are available for download? How do I get approved to access the commercial data? Are there any restrictions on using screenshots, includi...

What is Common Metadata Repository? CMR is a high-performance, high-quality, continuously evolving metadata system that catalogs all data and service metadata records for NASA's Earth Observing System Data and Information System (EOSDIS) system and will be the authoritative management system for al...

NASA Earth Science Data Systems Web Unification Frequently Asked Questions Why is this project occurring? The purpose of the project is driven by the 21st Century Integrated Digital Experience Act (IDEA) that was signed into law in 2018. The Act requires all agencies in the executive branch to make...

Imagery Use and Citation Information NASA supports full and open sharing of data and we encourage publication of imagery from Worldview Snapshots; when doing so for image captions, please cite it as "NASA Worldview Snapshots" and also consider including a direct link to the imagery in Wor...

What is the maximum image size/dimension that I can download?

The maximum image size/dimension you can download is 8200 x 8200 pixels.

What do the different band combinations mean for the corrected reflectance images? A digital color image displayed on a monitor is composed of three different color channels: red, green, and blue. The Corrected Reflectance satellite images from MODIS and VIIRS are made by combining the reflected li...

Fires When you select Fires as your overlay layer, it will match the corresponding fire layer to the base layer you have picked. These are available approximately 3 hours after satellite observation. Terra/MODIS Corrected Reflectance layers: Terra/MODIS Fires and Thermal Anomalies (Day and Night) l...