Science Fiction

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This magazine is aimed at fans and creators of sci-fi and related media of all kinds. It includes all content related to the sci-fi genre and only content related to the sci-fi genre. The goal is to build a community for everyone who enjoys science fiction and related topics. This includes the obvious books, movies, and TV shows, but also original writing, the discussion of writing SF, futuristic art and designs, and the science and technologies that inspire the sci-fi genre. **Team Top 20**

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Is time travel really possible? Here's what physics says (www.bbc.com)

submitted 1 year ago by inkican@kbin.social to c/scifi@kbin.social

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The ability to jump forward and backwards in time has long fascinated science fiction writers and physicists alike. So is it really possible to travel into the past and the future?

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[–] Pons_Aelius@kbin.social 3 points 1 year ago

In our universe there are several possibilities to slow the passage of time compared to an observer on earth. Namely travelling at a high percentage of the speed of light or existing in a high gravity field (close to the event horizon of a black hole) but there is no practical way to travel back and forwards in time

In your SF universe? Well, it is what ever you decide.