Earth's air has a density of approximately 1019 molecules per cubic
centimeter; by contrast the densest nebulae can have densities of
10,000 molecules per cubic centimeter. --
https://en.wikipedia.org/wiki/Nebula

So, figure that skimming kinda needs at least Earth's atmo pressure to
get the "hours" numbers we're expecting
That would imply about 10^15th longer.  That comes out to about 1.1 x
10^11 years. Considering the universe is about 1.3 x 10^10 years
old... that would be awkward.

On the other hand, you could move faster when nebula skimming than gas
giant skimming, so that might trim down some time.

On Mon, May 1, 2023 at 11:08 PM kaladorn at gmail.com (via tml list)
<xxxxxx@simplelists.com> wrote:
>
> I have a question:
>
> Is there any reasonable chance that if you jumped into an empty hext *that contained a dense Nebula*, that they could go into cold sleep, set the computer to drift through the Nebula until it has enough power to jump?
>
> I am guessing real Nebulas are more defuse than I think (just like SW crash-crunch-smash asteroids are not at all like real asteroid belts)... but it was worth asking.
>
> - kaladorn
>
> On Thu, Apr 27, 2023 at 6:57 PM Hubert Figui?re - hub at figuiere.net (via tml list) <xxxxxx@simplelists.com> wrote:
>>
>> On 2023-04-27 17:17, Christopher Sean Hilton - chris at vindaloo.com
>> (via tml list) wrote:
>> > Hi,
>> >
>> > I have a question about the mechanics of jump drive. Did I read somewhere that in a nominal
>> > jump trip, you precipitate out of Jumpspace at the 100D limit of a target object in normal
>> > space? If this is the case, how do you handle jump into empty hexes?
>> >
>>
>> The way I always interpreted it is that the 100D was the *minimum* safe
>> distance you could reemerge from jump space.
>>
>> If you reemerge in an empty hex, the bigger problem will be whether you
>> have enough fuel. This is also part of the problem when you have a jump
>> mishap and arrive in a place where there is no giant gas available.
>>
>> In GURPS Traveller Interstellar War, they describe how Terra reached
>> neighbouring system with Jump-1: the established refueling stations,
>> which just support this interpretation.
>>
>> Cheers,
>>
>> Hub
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