5 ms·
I don't think we have to go that far. These particles exist in nature, but not conveniently here on earth in the vicinity of test equipment. The Universe prod
by jordanb 15y ago
I don't think we have to go that far. These particles exist in nature, but not conveniently here on earth in the vicinity of test equipment.
The Universe produces very high energy events all the time -- supernova among others -- and many of these have happened within our light cone, yet have not thrown a wave of new vacuum at us.
- sp332 15y agoSince the expansion happens at the speed of light, we would have no advance warning. We couldn't "see" the event approaching us, since the event would arrive at the same time as the light from it.
- JanezStupar 15y agoThat is if the event would have been instantaneous. Otherwise it would probably be the most beautiful phenomena possible. Also this event might have happened somewhere in the universe and never reach us. Right?
- sp332 15y agoLet's say the event happens 4 light-years away from us. It's not traveling instantaneously, it's only traveling at the speed of light. So it will take 4 years to get here. But we will never see it, because the light from the event will also take 4 years to get here, so we will be destroyed at the same time that the light from the event arrives.
- JanezStupar 15y agoWell if the phenomena was not instantaneous and would have some sort of "flash" preceding the shock wave, for a couple of minutes. It could be visible. And anything on that scale would be extremely bright and beautiful. Its just an alternative to black wall you will never see or feel. But honestly I have no idea which one is more likely.