APOD and General Astronomy Discussion Forum
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Nebulas are still hard vacuums. From inside, the level of the background would be slightly higher (the sky would be slightly less black). Flying into one, or living in one, might not be apparent at all without instruments.HwyThunder wrote: ↑Thu Mar 07, 2019 3:44 pm From our distant observation point a nebula appears cloud-like. What would it be like to travel through a nebula? Would it seem like one was in a cloud, or would the particles be so sparsely distributed that it would appear to be open space?
Sure, something like Bok globules. And we do see nebulas that we can't easily see through. But as you say, we're talking light years. And in the absence of FTL rockets, light year scale dogfights are pretty unexciting.geckzilla wrote: ↑Fri Mar 15, 2019 5:48 am Some of those star-forming regions are pretty dense, though. Take the dogfight to a cosmic scale with many lightyears between one viewpoint to another, and things could be significantly obscured. I don't doubt that someone inside a dust cloud dense enough that the dust is cold would have issues seeing out of it. If the dust is cold, it's not receiving any light.
Unexciting for an outside observer, perhaps.Chris Peterson wrote: ↑Fri Mar 15, 2019 2:05 pmSure, something like Bok globules. And we do see nebulas that we can't easily see through.geckzilla wrote: ↑Fri Mar 15, 2019 5:48 am
Some of those star-forming regions are pretty dense, though. Take the dogfight to a cosmic scale with many lightyears between one viewpoint to another, and things could be significantly obscured. I don't doubt that someone inside a dust cloud dense enough that the dust is cold would have issues seeing out of it. If the dust is cold, it's not receiving any light.
But as you say, we're talking light years. And in the absence of FTL rockets, light year scale dogfights are pretty unexciting.
True... although when you look at the time relationship between two objects each traveling at relativistic speeds, from each other's frames, it gets awfully complicated.neufer wrote: ↑Fri Mar 15, 2019 3:35 pmUnexciting for an outside observer, perhaps.Chris Peterson wrote: ↑Fri Mar 15, 2019 2:05 pmSure, something like Bok globules. And we do see nebulas that we can't easily see through.geckzilla wrote: ↑Fri Mar 15, 2019 5:48 am
Some of those star-forming regions are pretty dense, though. Take the dogfight to a cosmic scale with many lightyears between one viewpoint to another, and things could be significantly obscured. I don't doubt that someone inside a dust cloud dense enough that the dust is cold would have issues seeing out of it. If the dust is cold, it's not receiving any light.
But as you say, we're talking light years. And in the absence of FTL rockets, light year scale dogfights are pretty unexciting.
But for the participants zooming around at ~0.999999999996c
a light year can be traversed in about a minute.
.Chris Peterson wrote: ↑Fri Mar 15, 2019 4:04 pmTrue... although when you look at the time relationship between two objects eachneufer wrote: ↑Fri Mar 15, 2019 3:35 pmUnexciting for an outside observer, perhaps.Chris Peterson wrote: ↑Fri Mar 15, 2019 2:05 pm
Sure, something like Bok globules. And we do see nebulas that we can't easily see through.
But as you say, we're talking light years. And in the absence of FTL rockets, light year scale dogfights are pretty unexciting.
But for the participants zooming around at ~0.999999999998c
a light year can be traversed in about a minute.
traveling at relativistic speeds, from each other's frames, it gets awfully complicated.
Fun fact: A relativistic [Space Force] dog fighter circling around a radius of 1 lyrneufer wrote: ↑Fri Mar 15, 2019 3:35 pmUnexciting for an outside observer, perhaps.Chris Peterson wrote: ↑Fri Mar 15, 2019 2:05 pmSure, something like Bok globules. And we do see nebulas that we can't easily see through.geckzilla wrote: ↑Fri Mar 15, 2019 5:48 am
Some of those star-forming regions are pretty dense, though. Take the dogfight to a cosmic scale with many lightyears between one viewpoint to another, and things could be significantly obscured. I don't doubt that someone inside a dust cloud dense enough that the dust is cold would have issues seeing out of it. If the dust is cold, it's not receiving any light.
But as you say, we're talking light years. And in the absence of FTL rockets, light year scale dogfights are pretty unexciting.
But for the participants zooming around at ~0.999999999998c
a light year can be traversed in about a minute.
