In the late 90s and early 00s you could totally have handwaved a hard SF scenario where gravitational waves from a Warp drive. Einstein calculated gravity Waves in 1911, and we saw the first evidence of them in the decay of a 1970s binary pulsar. Alcubierre published his warp spacetime in 94.
So there would have been room for hard SF space opera authors to sell the idea, like Stephen Baxter, Peter F Hamilton, or Alastair Reynolds.
Granted, it's amazing that now we can actually /simulate/ the sound of arriving warp ships! I imagine this will very quickly show up in short stories!
So there would have been room for hard SF space opera authors to sell the idea, like Stephen Baxter, Peter F Hamilton, or Alastair Reynolds.
Granted, it's amazing that now we can actually /simulate/ the sound of arriving warp ships! I imagine this will very quickly show up in short stories!