Last updated: 2026-10-26

Privacy Policy

What is real and what is original

Real data

The missions, images, relief, the “Mars by the Numbers” figures, planetary positions and the facts of exploration are based on real data from space agencies and scientific sources (NASA, ESA, JPL, CNSA and others). They are rounded and simplified for outreach purposes.

The Martian calendar is the author’s own

The Martian calendar (Martian Horizon Time Standard, MH-STD-001) is a creation of the site’s author: it is not official and no space agency recognises it. It has been built with great rigour and links faithfully and consistently with the rest of the site (missions, events, converter and orbital map), but it is a standard of its own.

The Mars Atlas is fiction

The Mars Atlas is a futuristic vision of how Mars might develop around Martian year 100. Its cities, roads, ports and populations do not exist and do not follow any real plan: it has nothing to do with reality, except that certain original place names and the planet’s real relief have been used as a base.

None of it should be used to plan real missions or is presented as official information. See the Terms of Use and the Credits.

1. Data controller

Controller: Jaime Marcos Rodríguez
Contact: missioncontrol@martianhorizon.com

2. What data we process, why and on what legal basis

Source	Data	Purpose	Legal basis
Contact form	Name, email, subject (if given) and message	Handling and answering your enquiry	Your consent (art. 6.1.a GDPR), given by ticking the box and submitting the form
Usage statistics (Google Analytics)	Cookie identifier, pages viewed, device and browser, approximate country	Understanding how the site is used in order to improve it	Your consent (art. 6.1.a GDPR and art. 22.2 LSSI): only active if you accept analytics cookies
Web server	IP address, date and time, requested page and browser	Security and technical operation of the service	Legitimate interest (art. 6.1.f GDPR)

3. How long we keep data

Form messages are kept as long as needed to handle your enquiry and, afterwards, blocked for the limitation periods of possible liabilities, then deleted. Statistics data is kept according to the Google Analytics settings (by default, 14 months at most). Server logs are kept for as long as the hosting provider determines.

4. Recipients and transfers

We do not disclose your data to third parties except where legally required. The following act as processors: the hosting provider (1&1 IONOS) and, only if you accept analytics cookies, Google Ireland Limited / Google LLC (Google Analytics), which may process data outside the European Economic Area under the safeguards provided by law (for example the EU-US Data Privacy Framework or standard contractual clauses).

In addition, to display typefaces the page loads fonts from Google Fonts servers, which means your browser sends your IP address to Google when visiting the site.

5. Your rights

You may exercise your rights of access, rectification, erasure, objection, restriction and portability, and withdraw your consent at any time (without affecting prior processing), by writing to missioncontrol@martianhorizon.com stating the right you wish to exercise. If you believe your data has not been handled properly you may complain to the Spanish Data Protection Agency (www.aepd.es).

6. Minors

The contact form is not aimed at children under 14. If you are under that age you need your parent’s or guardian’s consent.

7. Security

We apply reasonable technical and organisational measures to protect data (encrypted HTTPS connection, restricted administration access and protection against automated submissions).