BEGIN:VCALENDAR VERSION:2.0 PRODID:-//pretalx//talks.staging.osgeo.org//foss4g-2024//speaker//EMSNNM BEGIN:VTIMEZONE TZID:-03 BEGIN:STANDARD DTSTART:20000101T000000 RRULE:FREQ=YEARLY;BYMONTH=1 TZNAME:-03 TZOFFSETFROM:-0300 TZOFFSETTO:-0300 END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:pretalx-foss4g-2024-8S3CMH@talks.staging.osgeo.org DTSTART;TZID=-03:20241205T104500 DTEND;TZID=-03:20241205T111500 DESCRIPTION:The European Space Agency (ESA) has adopted a variety of open-s ource software tools to manage\, visualize\, and distribute planetary data \, with a particular emphasis on Mars. These tools are essential for both internal operations and for providing crucial data access to the global sc ientific community. Below\, we detail the use of these technologies\, coll aboration on open-source projects\, and the underlying GIS architecture de veloped by the Planetary Science Archive (PSA). [Link](https://psa.esa.int /psa)\n\n## Tools Used\n\n1. **OpenLayers**:\n - **Functionality**: A Ja vaScript library for creating interactive maps in web browsers.\n - **Ap plication**: Used to build web user interfaces that allow scientists to vi sualize geospatial data of Mars and other planets\, offering an intuitive and accessible platform for the exploration and analysis of planetary data .\n\n2. **GeoServer**:\n - **Functionality**: An open-source map server that enables the sharing and editing of geospatial data.\n - **Applicati on**: Used to serve spatial data via standard protocols like WMS (Web Map Service). This facilitates the visualization of footprints with different base maps.\n\n3. **Three.js**:\n - **Functionality**: A JavaScript libra ry for creating 3D graphics in web browsers.\n - **Application**: It is employed to generate three-dimensional visualizations of the Rosetta comet .\n\n4. **PostgreSQL and PostGIS**:\n - **Functionality**: PostgreSQL is an open-source relational database management system\, and PostGIS is an extension that adds support for geographic objects.\n - **Application**: Are used to store and manage complex geospatial data. PostGIS allows for advanced spatial queries\, facilitating the analysis of large volumes of g eospatial data and its integration with other GIS tools like GeoServer.\n\ n## Collaborative Projects and Data Access\n\n1. **Astroquery**:\n - **D escription**: A Python library that facilitates access to online astronomi cal databases.\n - **Collaboration**: ESA contributes to Astroquery to e nsure that planetary data is easily accessible to researchers. This includ es data from planetary exploration missions and astronomical observations\ , integrating these data into scientific analyses efficiently.\n\n2. **Ant imeridian**:\n - **Description**: Tool for processing spatial data cross ing the antimeridian (the 180° line of longitude)..\n - **Collaboration **: Open Source project\, and the PSA plans to collaborate with the projec t by contributing code. This tool is crucial for planetary data where coor dinates can be extended beyond the traditional range of 0° to 180° longi tude\, allowing for continuous and accurate representation of planetary ma ps..\n\n## New Interface and GIS Architecture\n\nESA has developed a new i nterface for the Planetary Science Archive\, integrating the aforementione d tools into a cohesive and user-friendly platform. This interface allows scientists to:\n- **Explore Interactive Data**: Navigate through interacti ve maps of Mars\, Phobos and other planets\, applying filters and visualiz ing different layers of geospatial data. Users can overlay geological\, to pographical\, and spectral data layers to gain a more comprehensive view o f the terrain and use the different functionalities\, such as changing the projection (polar\, equirectangular)\, extracting information by region o f interest.\n- **3D Visualization**: Thanks to Three.js\, users can explor e the the 67P(Churyumov-Gerasimenko) comet in 3D for the Rosetta mission\, rotate\, and zoom into features for more detailed analysis. Ultimately\, we use Three.js to represent irregular bodies such as comets\, asteroids\, and asteroids.\n- **Real-Time Data Access**: Researchers can access the l atest information and perform real-time queries to obtain specific data ac cording to their needs.\n- **Data Download**: Scientists can download data sets directly from the interface for use in their own analyses and studies \, selecting and downloading specific subsets of data based on defined sea rch criteria.\n\n## GIS Architecture\n\nThe GIS architecture behind this n ew interface relies on a robust combination of open-source technologies:\n - **GeoServer Base Maps**: Acts as the distributor of base maps of Mars\, Phobos\, Cassis. They are cached using GWC to optimize access in all avail able projections.\n- **Frontend with OpenLayers and Three.js**: Provides 2 D and 3D visualization capabilities\, offering a rich and interactive user experience. OpenLayers is used for 2D interactive map visualization\, whi le Three.js is employed to generate three-dimensional visualizations of pl anetary surfaces.\n- **Database with PostgreSQL and PostGIS**: Used to sto re and manage complex geospatial data. PostgreSQL and PostGIS enable advan ced spatial queries\, facilitating the analysis of large volumes of geospa tial data and its integration with other GIS tools.\n- **Integration with Data Access Tools**: Projects like Astroquery and Antimeridian are integra ted to facilitate the access and manipulation of specific data\, solving c omplex issues like the management of data crossing the antimeridian. This integration allows scientists to access and analyze planetary data more ef ficiently and accurately.\n\n## Benefits for the Scientific Community\n\nT he use of advanced technologies and a robust GIS architecture developed by ESA offers several significant benefits for planetary research:\n- **Open and Transparent Access**: Although the code is not public\, ESA uses open -source tools that ensure data and resources are available to the entire s cientific community. This promotes collaboration and knowledge sharing\, a llowing researchers to access information without restrictions and work to gether more efficiently. Another benefit for the scientific community is t o be able to cross different instruments/missions in a single interface\, e.g.\, give me all the CaSSIS and HRSC data of this particular crater. For more information about ESA projects\, you can visit their [GitHub reposit ory](https://github.com/esa).\n- **Solutions to Specific Problems**: Tools like Antimeridian [Antimeridian GitHub](https://github.com/gadomski/antim eridian) address unique technical challenges\, ensuring precise and contin uous representation of planetary data. This facilitates the analysis and i nterpretation of geospatial data\, ensuring that visualizations and maps a re accurate and reliable.\n\n## Conclusion\n\nThe adoption of open-source software and the development of an advanced GIS architecture enable ESA to offer a powerful and accessible platform for planetary research. This ben efits not only its own scientists but also the global scientific community \, promoting knowledge sharing and collaboration in the exploration of the Solar System. Tools such as OpenLayers\, GeoServer\, Three.js\, PostgreSQ L\, and PostGIS\, along with collaborative projects like Astroquery and An timeridian\, are fundamental for the efficient management and precise visu alization of planetary data.\n\nWith all this\, the summary of the talk is to show how free software is used in the PSA for planetary data and more specifically in Mars data. DTSTAMP:20260504T102732Z LOCATION:Room V SUMMARY:Use of Open Source Software in the ESA Planetary Science Archive - Fran Raga URL:https://talks.staging.osgeo.org/foss4g-2024/talk/8S3CMH/ END:VEVENT END:VCALENDAR