Welcome to the JMARS website

JMARS is an acronym that stands for Java Mission-planning and Analysis for Remote Sensing. It is a geospatial information system (GIS) developed by ASU's Mars Space Flight Facility to provide mission planning and data-analysis tools to NASA scientists, instrument team members, students of all ages and the general public. JMARS has been available to the public since 2003. It is used in over 100 countries and has over 6,000 active users.

Action Required: Update JMARS to Continue Using It

Users running JMARS versions older than 5.7.0 may be unable to start the application and may see a message reporting a connectivity problem. This is caused by a recent server security certificate update that older versions of JMARS are not able to accept.

What you need to do:
Download and install the latest version of JMARS from the JMARS website (https://jmars.mars.asu.edu). Because affected versions cannot reach the in-app "Check for Updates" feature, the update must be downloaded manually.

Once the latest version is installed, JMARS will connect normally. Installing in the same directory as the currently installed version is fine. Your existing settings and data are not affected.

If you continue to have problems after updating, please contact us at help@jmars.asu.edu.

JMARS Announcements

2026/09/29 - Join us for Virtual office hours! October, 2nd @12pm Arizona time

Come talk to JMARS Developers and ask any questions you may have!
2026/09/21 - New Tutorial and JMARS Functionality

Learn how to export images in JMARS. In JMARS, we can now export static and georeferenced images.

JMARS Features

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Information

Weekly Virtual Office Hours

Have any questions? On Friday October, 2nd @12pm MST, Come join us for office hours on Zoom to learn and ask any questions you might have! Click Here for more information

Join Us On Discord - The JMARS discord server is a great place to interact with other JMARS users, ask the JMARS team questions and share JMARS information.

CryoMars Workshop JMARS Tutorials Click Here

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JMARS Public Downloads

	The following JMARS installer is likely the best for your system: This JMARS installation includes several planetary bodies, such as Mars, Earth, Earth's moon, Mercury, Venus and many more Show other JMARS installers: Win_64 \| Mac_OS \| Linux_64 Need help? Instructions on installation are below.
	The following J-Earth installer is likely the best for your system: Show other J-Earth installers: Win_64 \| Mac_OS \| Linux_64
	The JMARS 2035 installer is no longer available. All functionality in the 2035 build is available in the standard version of JMARS. Please use the links above to install JMARS. If you would like the 2035 startup session, please download it here: 2035 session
	The JMARS MSIP installer is no longer available. All functionality in the MSIP build is available in the standard version of JMARS. Please use the links above to install JMARS.
	The JMARS Vesta installer is no longer available. All functionality in the JMARS Vesta build is available in the standard version of JMARS. Please use the links above to install JMARS.
	The JMARS Ceres installer is no longer available. All functionality in the JMARS Ceres build is available in the standard version of JMARS. Please use the links above to install JMARS.