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Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the place beyond which physics breaks and anything is possible
By Leah Crane
18 May 2026
Facebook / Meta
The hidden pockets of the universe where the future can cause the past
Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the place beyond which physics breaks and anything is possible
1,134 words~5 min read
