4 ms·

That is actually scary. When you travel in interstellar space, you can only travel in directions where you can see light at all times.

• leonroy 8y ago
  Which actually becomes a problem in the far future when stars have moved further away from each other in an ever expanding universe and their light output becomes increasingly dim to a space faring traveller...
  • hvidgaard 8y ago
    When I think about it, maybe it isn't a problem after all. I would think that you can measure gravity and see black holes before you hit them.
    • zaarn 8y ago
      Measuring gravity is hard. What you can do is measure gravity at both ends of your ship and if they differ by a lot you're currently being shredded apart by a blackhole.
      • hvidgaard 8y ago
        I'm sure that we'll have that figured out once we can manage interstellar travel.