JMARS

Clear, up-to-date instructions for using JMARS tools, map layers, and overlays to explore Mars and other planetary bodies.

Start with a question. Use JMARS to figure it out.

Ask questions. Explore answers.

Click an investigation below for step-by- step instructions.

Elevation Color Legend for Explore Map Layer (NASA) - zoom levels 1-32 ppd

How wide is Olympus Mons based on this measurement?

How does vertical exaggeration help you see features more clearly?

How could this mineral hematite have formed—and what conditions would be needed?

Is this feature raised—or is it a depression? What does the elevation profile reveal?

What advantage does HiRISE give to surface rovers?

What changes between day and night—and why?

Resources, Activities and Advanced Tools

We study to understand.
We measure. We map. We name.

But then we look at Mars—

and begin to wonder

its story