# Alcubierre Warp Bubbles: Observation & Travel Questions

• KeithLucas
In summary, there is currently a lot of buzz surrounding Sonny White's efforts to find Alcubierre warp bubbles. These bubbles would allow for objects to travel at superluminal speeds, but it raises the question of how these objects could be observed. It is possible that they would only appear to be traveling at the speed of light due to the light outside of the bubble. There is also the possibility that the object would seem to be in multiple places at once. Additionally, it may be possible for a person traveling inside one of these bubbles to return home and watch their own journey from a telescope. However, the logistics of observing and entering these bubbles are still unknown.

#### KeithLucas

I've been reading a lot of hype about Sonny White and his attempts to look for Alcubierre warp bubbles. If objects do in fact non-locally travel at de facto superluminal speeds, how can these objects be observed to be traveling at such speeds? Wouldn't the observer just see the light outside of the bubble, and thus only see the object travel at the speed of light? Would the object appear to be in several places at once? Could a person traveling inside one of these hypothetical bubbles(assuming he doesn't get killed) return home and then watch his own journey from a telescope?

The same logic applies to hearing supersonic aircraft: you can only hear them if you are inside the cone, the sound is Doppler shifted, and if you could turn around fast enough, you'd be able to hear youself coming.

...assuming, of course, that the light can get in and out of the "bubble". Not sure how that works.

Take a laser, point it towards one side of the moon and quickly turn it so it points to the other side. If you are fast enought in this hypothetical experiment, the spot on the moon will "move" faster than the speed of light. If the spot would be bright enough to get observed from earth, you would see a light spot apparently moving faster than light, without anything unusual happening.
KeithLucas said:
Would the object appear to be in several places at once?
Possible, it depends on the flight profile.
KeithLucas said:
Could a person traveling inside one of these hypothetical bubbles(assuming he doesn't get killed) return home and then watch his own journey from a telescope?
Should be possible, assuming the bubble is observable (we don't have one to test it).