From Science Channel.

Great Scott! You may not need a flux capacitor, a DeLorean or 1.21 gigawatts to time travel. Black holes, wormholes, and other naturally occurring cosmic phenomena may be the key to unlocking the secrets of time travel. 🕰️ ⚡️
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Is Time Travel Possible Through Black Holes? | How the Universe Works | Science Channel
https://youtu.be/HxeGpGww-EU