Contact
Last updated: October 25, 2026
Email is the most direct way to get in touch. I read every message and reply as soon as I can.
Write to vanraidex@gmail.com. If your message is about a specific chapter, include the link or page name so I can find it quickly.
What you can write about
- Science or calculation errors: if a figure looks wrong or an explanation is confusing, tell me. A source helps if you have one.
- Technical problems: a simulator that doesn't respond, a broken link or a page that doesn't display well on your device (please mention browser and device).
- Suggestions: concepts from the book you'd like explained in more depth, or ideas for new simulators.
- Privacy: requests about your personal data, as described in the privacy policy.
What I can't help with
This site has no connection with Andy Weir, his publishers or the film studio, so I can't pass messages on to them or answer on their behalf. I also don't provide copies of the book or links to unauthorized copies.
What happens to your message
Your email address and message are only used to reply to you and are deleted once the conversation is no longer needed. They aren\'t added to any mailing list or shared with anyone. More details in the privacy policy.