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Delay-Tolerant Networking suitable for spacecraft and ground
11/21/2025
* Official distribution sites for ION and ION-core have moved to GitHub:
https://github.com/nasa-jpl/ION-DTN
https://github.com/nasa-jpl/ion-core
* ION documentation:
https://ion-dtn.readthedocs.io/
Download link for new releases (after ION 4.1.2) is posted below. Please report all issues to GitHub. Submissions to this site will not be monitored.
=============================
ION development is managed by the Jet Propulsion Lab.
...Documentation is found at
https://plexil-group.github.io/plexil_docs. Please use these new locations.
PLEXIL is a plan execution language and technology developed by NASA and used in automation and autonomy applications at NASA and in the public sector. This software includes compilers for the language, the executive (runtime environment), and related tools. It runs on Unix-based computers, including macOS and Linux.
A handy tool designed to help beginner Astronomers.
The software Astronomy CCD Calculator uses NASA/SkyView survey resource which provides CCD images of the night sky.It helps you plan an observation by letting you play with different instruments resulting various "Fields Of View" so you can see what your camera will capture and choose the best target for the session.
OBSOLETE - Please proceed to new repo:
https://github.com/nasa/osal
This project will be closed in the near future
ALERT: The osal-4.2.1a release package is now available. This release package fixes a unit test makefile to use Modules.mak rather than using ut-modules.mak directly. The top-level readme.md file was also updated to add missing information.
The OS Abstraction Layer (OSAL) project is a small software library that isolates embedded software from the real time operating system. ...
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