Black Hole

While theoretical concepts exist, the practicality of using black holes for time travel remains speculative and faces significant challenges.

The intense gravitational forces near a black hole’s singularity would stretch and compress an object, leading to its eventual spaghettification.

Theoretically, black holes may evaporate over extremely long timescales due to Hawking radiation.

Once past the event horizon, nothing, not even light, can escape a black hole’s gravitational pull.

No, distant black holes pose no threat to Earth. The closest known black hole, Cygnus X-1, is over 6,000 light-years away.