Explore four real regions of the red planet, compute routes that avoid hazards, check weather and radiation, and traverse the terrain in 3D. All with NASA/JPL and USGS data.
* pH and composition: reference values for Martian soil (Jezero/Gale measured by SAM and CheMin). MEDA does not measure surface pH or O₂: suit values are shown as context data, not in-situ measurements. View from the rover mast (lunar vehicle): the suit is the vehicle’s habitat.
Create your mission credential. It is stored in this browser and appears in the HUD and the black box.
Generates: battery, O₂, health, accumulated radiation and simulated stations (Delta, Edge, Base).
First time? or .
Every emergency, detour and recalculation is sealed with LTST time. It is not erased when switching regions.
Oppy Trail is the “Google Maps” for astronauts on Mars: it turns real NASA imagery and measurements into an offline map that computes safe routes, walking time, radiation dose and 3D relief. You pick the destination; Oppy tells you how to get there in one piece.
Jezero (Perseverance) or Gale (Curiosity). Switching regions changes terrain, weather and mission routes.
The Risk layer blends slope, rocks, dunes and sand into a value from 0 (safe) to 1 (forbidden).
The A* planner avoids slopes above 20° or 25° and estimates distance, time, dose and whether it fits in a 7-hour EVA.
The camera follows the Opportunity rover from behind and the route lights up ahead. Move with ↑ ↓, turn with ← →, switch camera with C.
Shortcuts: O opens Oppy · P POV view · C switch camera · V switch vehicle · Space pause · Esc exit. Everything works offline.
Orthoimagery and tiles of the global Mars map. Geographic grid of 2z+1 × 2z, aligned with the official map.
trek.nasa.gov/mars1 m digital elevation models in Jezero and Gale. Slope, roughness, dunes and the 3D relief all come from here.
planetarymaps.usgs.govMineral map of Jezero crater (Zenodo 5575824), aligned to the same terrain grid.
zenodo.org/records/5575824Temperature, pressure and seasons from the MEDA instrument. Reference radiation RAD/Curiosity (Hassler et al., 2014).
mars.nasa.gov/mars2020/weatherAutomatic detection of rocks ≥ 1.5 m over the Jezero orthoimage. 23,730 detections in the large region.
Team model · GPUPerseverance and Curiosity traverses published by NASA/JPL, used to validate the planner.
mars.nasa.gov/mmgis-mapsThe DEM is reprojected to a geographic grid. Slope (p90 over 10 m cells), roughness, dunes and sand ripples are computed.
Slope, rocks, sand and scarps are combined. The result is a per-cell cost from 0 to 1, with forbidden zones at 20° and 25°.
8-neighbor A* over the cost. The recommended route puts safety first; the alternative allows 25° and the shortest is reference only.
A 1,000-sample Monte Carlo perturbs the DEM (±0.15 m) and estimates the probability that a cell becomes forbidden.
Walking speed 2 km/h; vehicle 5 km/h. Dose = 0.64 mSv/sol × sol fraction. An EVA lasts at most 7 h.
Routes are compared with the real traverses of Curiosity and Perseverance, not only with synthetic metrics.
cost = distance × (1 + 2.2·risk1.6 + rocks + sand + slope)
Cells above the slope limit or inside an exclusion zone are blocked. If no route exists, the system warns and offers the minimum-risk option.
It is an exploration and visualization tool. A real mission requires human validation, updated data and agency procedures.
Jezero and Gale are mapped in detail. Outside those regions the global map is context only.
MEDA measures in Jezero. For Gale it is used as a regional reference; it does not replace a local weather station.
The dose uses the RAD/Curiosity average and does not model extreme solar events or habitat shielding.
The map does not update in real time. The reference date is November 14, 2026 (Ls 21.8°).
All files are included in the site/assets folder. Download the layers of the active region:
GeoTIFF, GeoJSON, PNG, tiles and models. Ideal for QGIS, MMGIS or a technical review.
Local folder: Hackaton Nasa Space / data / export