Are black holes time machines? Yes, but there's a catch

Are black holes time machines? Yes, but there’s a catch

Black holes form natural time machines that allow travel to both the past and the future. But don’t expect to be heading back to visit the dinosaurs any time soon.At present, we don’t have spacecraft that could get us anywhere near a black hole. But, even leaving that small detail aside, attempting ...

Are black holes time machines? Yes, but there's a catch

Black holes form natural time machines that allow travel to both the past and the future. But don't expect to be heading back to visit the dinosaurs any time soon.

Are black holes time machines? Yes, but there’s a catch

While it’s fun to think about the time-warping properties of black holes, for the foreseeable future that visit to the dinosaurs will have to stay in the realm of fantasy

Are Black Holes Time Machines? Yes, but There’s a Catch

A clock near a black hole will tick very slowly compared to one on Earth. One year near a black hole could mean 80 years on Earth.