Layer data from several NASA Mars missions into one view of a location or route, so a future astronaut could plan a safe, science-rich Marswalk.
Read the official challenge on spaceappschallenge.org
The official resource list arrives Oct 28; THEMIS day and night thermal-infrared mosaics are also in Mars Trek.
In order of how useful they are likely to be. These are suggestions, not the official resource list.
NASA Solar System Treks (JPL)
Mars basemaps as WMTS tiles with open CORS, including the global 5 m CTX mosaic (CTX_beta01_uncontrolled_5m_Caltech) and MOLA color hillshade (Mars_MGS_MOLA_ClrShade_merge_global_463m). Stack them to plan a route and read terrain.
endpoint https://trek.nasa.gov/tiles/Mars/EQ/CTX_beta01_uncontrolled_5m_Caltech/1.0.0/WMTSCapabilities.xml
University of Arizona HiRISE team / NASA PDS
Mars Reconnaissance Orbiter images at roughly 25 to 50 cm per pixel, sharp enough to see boulders, rover tracks and landers. The PDS archive holds full-resolution RDR products and digital terrain models (DTM).
endpoint https://hirise-pds.lpl.arizona.edu/PDS/
NASA
Search API over NASA's public photos, videos and audio, with no key and open CORS. Good for mission artwork, historical hardware photos and game assets.
endpoint https://images-api.nasa.gov/search
// No key, CORS enabled: works directly in the browser
const q = encodeURIComponent("Apollo 15 lunar roving vehicle");
const res = await fetch(`https://images-api.nasa.gov/search?q=${q}&media_type=image`);
const { collection } = await res.json();
console.log("hits:", collection.metadata.total_hits);
for (const item of collection.items.slice(0, 5)) {
const meta = item.data[0];
const thumb = item.links?.[0]?.href;
console.log(meta.nasa_id, "|", meta.title, "|", thumb);
}