Contact
A question, a bug, a universe you're proud of, or just to say hello — the inbox is open.
This is a one-person, non-commercial project, so a reply comes from an actual human — occasionally a slow one. There's no form to wrestle with and nothing to sign up for.
Write an emailResponse time
Usually a few days. It's a side project, not a support desk — thanks for the patience.
Your message
Your address is used only to reply. It isn't stored afterwards, added to any list, or shared with anyone.
Good things to write about
Found a bug, a broken link, or a universe that behaves oddly? That is the most useful thing you can send: tell me what you did and what happened, and I will dig in.
Corrections to the physics or the essays are just as welcome. Break the Universe simplifies real cosmology on purpose, but it should never be wrong where it does not have to be — if something reads as a claim it cannot back up, point it out. You are also welcome to just say hello or share a universe you are proud of.