Using SpaceWonder
SpaceWonder is provided free of charge for personal and educational use. You may share links, screenshots and calculator results for non-commercial teaching and learning with attribution to SpaceWonder.
Educational purpose
Content and tools are for education. They are not professional engineering, navigation or scientific advice, and must not be relied on for mission-critical or safety-critical decisions. See the disclaimer.
Acceptable use
- Do not attempt to disrupt the service, bypass rate limits or scrape it at a volume that burdens our servers or the public data services behind them.
- Do not submit unlawful, abusive or spam content through our forms.
Third-party content
News headlines, images and datasets belong to their respective owners and are subject to their terms. Planet textures are used under CC BY 4.0 (see credits).
Availability and changes
We may change or withdraw features at any time. Live data depends on external services that may be unavailable. We may update these terms; the date below shows the latest version.
Liability
To the extent permitted by law, SpaceWonder and HSZB Technologies are not liable for losses arising from use of the site or reliance on its content.
Last updated 2026-10-23.