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Researchers in Antarctica observe mysterious particles that some argue is evidence of a parallel world formed at the Big Bang where time runs backward

Scientists traveled to Antarctica looking for high energy particles from space

Instead, they were surprised to find them coming from Earth

The team believed the unexpected behavior suggested a new kind of particle

Some explain the particle's strange behavior by suggesting it came from a mirror universe created at the same time as the Big Bang, where time flows backward

https://www.dailymail.co.uk/sciencetech/article-8338073/Researchers-Antarctica-gather-evidence-mirror-universe-time-runs-backwards.html

https://www.newscientist.com/article/mg24532770-400-we-may-have-spotted-a-parallel-universe-going-backwards-in-time/