A synthesis of Outer Spacetime and Extended Relativity, proposing that relativity itself extends beyond our spacetime—that there may be frames of reference outside our observable universe, and that physical laws are relative to the spacetime manifold one inhabits. Outer Relativity suggests that what we call "universal" laws might be local to our cosmic neighborhood. Beyond our spacetime, different relativities apply. It's relativity applied to the multiverse: every universe has its own relativity.
"Our laws of physics might be local bylaws, not universal absolutes. Outer Relativity Theory says: different spacetimes, different relativities. What's constant here might vary there. Relativity doesn't stop at the cosmic horizon; it extends beyond—to outer relativity."
by Dumu The Void March 5, 2026
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