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The
European Space Agency
MaRS (Mars Express Radio Science) uses radio waves to study both the surface and atmosphere. It measures local variations in gravity over the surface of Mars and provides pressure and temperature profiles of the atmosphere. The MaRS Principal Investigator is Dr. Martin P�tzold, University of Cologne, Germany. The primary source for MaRS data is the ESA Planetary Science Archive. Through a cooperative agreement between ESA and NASA, the PDS Geosciences Node is hosting a copy of the MaRS data archive. Copy of MaRS Data at the PDS Geosciences Node
More information about MaRS is on the ESA web site. April 21, 2026. New data on 1 volume have been added to the Raw Extended Mission 9 data set, extending the coverage to May 4, 2025. December 17, 2025. New data on 11 volumes have been added to the Raw Extended Mission 9 data set, filling in gaps and extending the coverage to December 28, 2024. December 5, 2025. A new dataset of derived products from MEX radio science occultation measurements has been added. April 23, 2025. New data on 32 volumes have been added to the Raw Extended Mission 9 data set, filling in gaps and extending the coverage to March 23, 2024. January 6, 2025. New data on 29 volumes have been added to the Raw Extended Mission 9 data set, filling in gaps and extending the coverage to December 23, 2023. 1 new volume has been added to the Reduced Occultation data set, with coverage from May 6 through June 21, 2022. November 13, 2024. New data on 30 volumes have been added to the Raw Extended Mission 8 and 9 data sets, filling in gaps and extending the coverage to December 6, 2023. October 15, 2024. New data on 40 volumes have been added to the Raw Extended Mission 9 data set, extending the coverage to October 28, 2023. November 10, 2023. A new dataset of derived products from MEX radio science occultation measurements has been added. The dataset contains ionospheric electron density profiles, along with neutral atmospheric temperature, pressure and number density profiles. November 9, 2023. New data have been added to the Raw Extended Mission 8 data set, filling in gaps in the coverage. September 19, 2023. New data have been added to the Raw Extended Mission 7 and 8 data sets, extending the coverage to June 21, 2022. July 13, 2023. New data have been added to the Raw Extended Mission 7 and 8 data sets, extending the coverage to June 17, 2022. October 31, 2022. New data have been added to the Raw Extended Mission 8 data set, extending the coverage to October 29, 2021. April 12, 2022. New data have been added to the Raw Extended Mission 8 data set, extending the coverage to April 25, 2021. November 19, 2021. New data on 4 volumes have been added to the Raw Extended Mission 7 data set, extending the coverage to December 25, 2020. November 11, 2021. New data on 20 volumes have been added to the Raw Extended Mission 7 data set, extending the coverage to December 17, 2020. November 1, 2021. New data on 20 volumes have been added to the Raw Extended Mission 7 data set, extending the coverage to October 1, 2020. October 14, 2021. New data have been added to the Raw Extended Mission 7 data set, extending the coverage to December 13, 2019. September 30, 2021. New data on 11 volumes have been added to the Raw Extended Mission 7 data set, extending the coverage to October 5, 2019. September 16, 2021. New data have been added to the Raw Extended Mission 7 data set, extending the coverage to September 21, 2019. September 9, 2021. New data have been added to the Raw Extended Mission 7 data set, extending the coverage to September 7, 2019. August 13, 2021. New data on 20 volumes have been added to the Raw Extended Mission 6 and Raw Extended Mission 7 data sets, extending the coverage to March 22, 2019. July 28, 2021. New data have been added to the Raw Extended Mission 5 and Raw Extended Mission 6 data sets, extending the coverage to March 3, 2018. July 16, 2021. New data on ~60 new volumes have been added to the Raw Extended Mission 5 data set, filling in gaps in the coverage. July 9, 2021. New data on ~50 new volumes have been added to the Raw Extended Mission 4 and Raw Extended Mission 5 data sets, filling in gaps in the coverage. May 27, 2021. New data on 45 new volumes have been added to the Raw Extended Mission 4 data set, filling in gaps in the coverage. May 14, 2021. New data on 50 new volumes have been added to the Raw Extended Mission 3 and Raw Extended Mission 4 data sets, filling in gaps in the coverage. May 7, 2021. New data on 34 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. April 23, 2021. New data on 25 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. April 15, 2021. New data on 20 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. March 25, 2021. New data on 15 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. March 19, 2021. New data on 15 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. March 11, 2021. New data on 15 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. February 26, 2021. New data on 10 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. February 16, 2021. New data on 20 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. February 8, 2021. New data on 7 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. February 1, 2021. New data on 7 new volumes have been added to the Raw Extended Mission 3 data set, filling in gaps in the coverage. January 26, 2021. The Raw Extended Mission 3 data set has been added, comprised of 9 new volumes, filling in gaps in the coverage. January 22, 2021. New data on 7 new volumes have been added to the Raw Extended Mission 5 data set, filling in gaps in the coverage. January 21, 2021. New data on 6 new volumes have been added to the Raw Extended Mission 5 data set, filling in gaps in the coverage. January 13, 2021. New data on 5 new volumes have been added to the Raw Extended Mission 5 data set, filling in gaps in the coverage. December 21, 2020. New data on 5 new volumes have been added to the Raw Extended Mission 5 data set, extending the coverage to September 25, 2015. November 30, 2020. New data on 5 new volumes have been added to the Raw Extended Mission 5 data set, extending the coverage to September 16, 2015. November 23, 2020. New data on 3 new volumes have been added to the Raw Extended Mission 5 data set, extending the coverage to September 11, 2015. December 22, 2016. New data on 22 new volumes have been added to the Raw Extended Mission 2 data set, extending the coverage to September 7, 2015. October 7, 2016. New data on 8 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. April 12, 2016. New data on 12 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. November 13, 2015. New data have been added to the Raw Extended Mission 2 data set, extending the coverage to August 22, 2014. August 10, 2015. New data on 11 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. July 16, 2015. Several new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps. June 5, 2015. New data on 23 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps and extending the coverage to June 26, 2014. April 17, 2015. New data on 47 new volumes have been added to the Raw Extended Mission 2 data set, extending the coverage to January 25, 2014. February 23, 2015. New data on 19 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. February 6, 2015. New data on 4 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. October 29, 2014. New data on 12 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. October 15, 2014. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. August 25, 2014. New data have been added to the Raw Extended Mission 2 data set, extending the coverage to Dec. 10, 2013. July 25, 2014. New data on 15 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. May 19, 2014. New data on 34 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. April 1, 2014. New data on 31 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. March 11, 2014. New data on 71 new volumes have been added to the Raw Extended Mission 2 data set, extending the coverage through May 31, 2013. February 28, 2014. New data on 17 new volumes have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. December 2, 2013. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. November 6, 2013. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through April 13, 2013. October 31, 2013. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. September 11, 2013. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through December 12, 2012. May 20, 2013. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. April 12, 2013. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. March 27, 2013. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through October 30, 2012. March 14, 2013. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. February 20, 2013. New data have been added to the Raw Extended Mission 2 data set, filling in gaps in the coverage. September 6, 2012. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through August 7, 2011. March 30, 2012. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through June 16, 2011. March 8, 2012. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through May 18, 2010. December 20, 2011. New data have been added to the Raw Extended Mission 2 data set, extending the coverage through Sept. 14, 2009. October 14, 2011. New data have been added to the Raw Extended Mission 1 and 2 data sets, filling in coverage gaps. August 25, 2011. New data have been added to the Raw Extended Mission 1 and 2 data sets, filling in a gap in Extended Mission 1 and extending the coverage to April 4, 2009, for Extended Mission 2. July 25, 2011. New data have been added to the Raw Extended Mission 1 and 2 data sets, filling in gaps in the coverage. June 8, 2011. New data have been added to the Raw Extended Mission 2 data set, extending the coverage to March 29, 2009. May 31, 2011. New data have been added to fill in coverage gaps in the Raw Extended Mission 1 and Raw Extended Mission 2 data sets. April 29, 2011. New data have been added to the Raw Extended Mission 2 data set. The new data extends the coverage to Dec. 29, 2008. April 21, 2011. New data have been added to the Raw Extended Mission 2 data set. The new data fill in gaps in the data set, so the time coverage remains the same. February 21, 2011. Seventeen new volumes have been added to the Raw Extended Mission 2 data set. The new volumes fill in gaps in the data set, so the time coverage remains the same. December 22, 2010. New raw Extended Mission 2 data has been added, bringing the coverage to October 30, 2008. November 30, 2010. Several new volumes have been added to the nominal mission and extended mission 1 data sets. These volumes fill in gaps in existing coverage.
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