Terms of service
Draft, not yet in force · last updated 2026-10-10
Service
Hevelius provides lunar maps, derived data layers, synthetic imagery datasets, funding-opportunity digests and mission information built from public data. Derived values are estimates with stated uncertainty, never measurements.
Accounts and subscriptions
Paid features are billed through Lemon Squeezy on a monthly basis and can be cancelled at any time; access continues to the end of the paid period.
Acceptable use
Do not use the service to command or control spacecraft, to circumvent rate limits, or to redistribute paid outputs as your own data product.
Data and attribution
Source data is in the public domain or openly licensed and credited on every page. LROC imagery credit: NASA/GSFC/Arizona State University.