ben_db t1_je9r3tz wrote on March 30, 2023 at 1:23 PM

Reply to comment by lmjoe in ELI5: Why can black holes cause light to not escape, but light doesn't slow down from gravity(and only change direction)? by [deleted]

I'm not certain of this, but my understanding is that light in a vacuum is unhindered. When it's passing through a medium, it interacts with the medium and either doesn't travel straight, or is absorbed and emitted. Someone correct me if this is wrong.