New tachyon theory could unlock the secrets of time travel and causality

Theory Briefing

• A new tachyon theory proposes faster-than-light particles can be reconciled with Einstein's relativity, eliminating classic paradoxes.
• The framework challenges the long-held assumption that superluminal travel inevitably destroys cause-and-effect ordering of events.
• If valid, the theory reopens serious scientific debate on time travel by removing its most fundamental physical objection.