A thread on today's SXS preprint: https://t.co/ry9i6UtSSG
Maybe, but not for humans just yet. Black holes can help give rise to wormholes. A wormhole is a bridge from one part of spacetime to another — a bridge through space, or through time, or through both. However, wormholes are almost certainly unstable — they will collapse very quickly, unless held up by something. It might be possible that some advanced civilization could figure out how to keep a wormhole open, and then use it for traveling through space and time.