The 4 Best Satellite Imagery Sources
There are several excellent resources available that provide high-quality satellite imagery. In this article, we will explore four of the best sources for obtaining satellite imagery.
These sources are perfect for students, geographers, and anyone eager to explore and understand the world, as they provide a wealth of reliable information, visually engaging maps, and interactive tools that cater to diverse learning styles.
1. Google Earth Pro
Google Earth Pro is a powerful tool that allows users to explore the Earth through high-quality satellite imagery. Unlike the web-based version, the desktop application offers numerous additional features.
One of the standout features of Google Earth Pro is the ability to view historical imagery. You can scroll back in time to see how specific locations have changed. For instance, you can track the destruction of villages in Nigeria’s Borno State over the years by comparing satellite images from different periods.
How to view historical imagery in Google Earth Pro
1. Access Historical Imagery:
– Once you’re focused on the desired location, you can access historical imagery by clicking on the clock icon located in the toolbar. This icon represents “Show Historical Imagery.”
2. Use the Time Slider:
– After clicking the clock icon, a time slider will appear at the top left of your screen. You can drag the slider left and right to view the available imagery from different years.
– As you move the slider, the imagery will update to show how the location looked at different points in time.
3. Adjust Imagery Transparency:
– You can also adjust the transparency of the historical imagery relative to the current view. This allows you to compare the old and new images directly, making it easier to identify changes over time.
4. Explore Specific Changes:
– Use the time slider to look for specific changes, such as urban development, landscape alterations, or environmental changes like deforestation or coastline shifts.
5. Save or Share Views:
– If you find a particularly interesting view or comparison, you can save the image by navigating to File > Save > Save Image. This allows you to share your findings or keep a record for future reference.
In addition to historical data, Google Earth Pro allows users to import various data layers, enhancing the analysis and understanding of geographic trends.
2. Copernicus Browser (formerly Sentinel Hub EO Browser)
Copernicus Browser is an excellent free resource for satellite imagery, operated by the European Space Agency (ESA) as part of the Copernicus Data Space Ecosystem. It provides access to data from the full Sentinel satellite constellation and other datasets.
Note: The original Sentinel Hub EO Browser — which previously offered free anonymous access to Sentinel and Landsat imagery — ended its free anonymous access in February 2025. The EO Browser is now part of Sentinel Hub’s commercial offering. The Copernicus Browser is the recommended free alternative for accessing Sentinel data.
Sentinel-2 imagery has a revisit time of approximately 5 days at the equator, meaning new images of any given location are available roughly every 5 days. This frequent update cycle is particularly useful for monitoring environmental changes such as flooding, wildfires, and crop health.
The Copernicus Browser also allows users to manipulate imagery by applying spectral band combinations to visualise specific phenomena such as vegetation health, moisture levels, or fire damage — capabilities that go well beyond what a standard basemap viewer offers.
3. Zoom Earth
Zoom Earth provides a different approach by displaying near-real-time satellite imagery and weather data. It pulls imagery from geostationary satellites including NOAA GOES, EUMETSAT Meteosat, and JMA Himawari, with updates every 10 to 15 minutes. This makes it ideal for tracking cloud movements, storms, and other rapidly changing atmospheric conditions.
One of the unique features of Zoom Earth is its capability to display heat signatures, which can be beneficial for detecting wildfires or other sources of heat.
This platform is particularly useful for users who need to monitor dynamic events and atmospheric conditions at a global scale.
4. World Imagery Wayback
The World Imagery Wayback tool offers a unique way to access historical satellite imagery. Users can compare images from different years using a swipe function that places two time periods side by side for direct visual comparison.
This feature is invaluable for analysing changes over time in various regions, making it a great resource for researchers and professionals in GIS. The tool archives every version of Esri’s World Imagery basemap published since 2014, with recent updates including Maxar Vivid Advanced 30 cm imagery for over 1,000 metropolitan areas.
FAQ
What is the best source for high-resolution satellite imagery?
Google Earth Pro typically offers the highest resolution imagery for free among the sources listed here, sourcing imagery from commercial providers including Maxar. For freely downloadable multispectral data, Sentinel-2 via the Copernicus Browser provides 10-metre resolution optical imagery.
Can I use these resources for commercial purposes?
Each resource has its own usage policy. Be sure to check their terms of service for commercial use guidelines before using imagery in any commercial project.
How often is the imagery updated on these platforms?
Update frequency varies by platform. Zoom Earth updates its weather satellite layer every 10 to 15 minutes. Sentinel-2 imagery via Copernicus Browser has a revisit time of approximately 5 days. Google Earth Pro’s basemap imagery is updated periodically, with the frequency varying by location and provider.
For more information on using these satellite imagery sources, visit their respective websites:
- Google Earth Pro
- Copernicus Browser
- Zoom Earth | Live Weather Map & Hurricane Tracker
- World Imagery Wayback
These tools are not just for professionals; anyone interested in exploring the world can benefit from these resources. Happy exploring!
