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In S02E02 the Mandalorian gives a ride to a Frog Lady. However they have to travel at sub-light speed, because apparently, travelling at hyperspeed would kill her eggs. It is not explained further and feels like really lazy writing. I can't think of any plausible reason why would the hyperspeed kill the eggs. Is there a canon or legends explanation for that?

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    How many decades to the destination?
    – Peter M
    Nov 8, 2020 at 22:04
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    More or less than 12 parsecs?
    – Mike G
    Nov 9, 2020 at 14:36
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    @TylerH astronomy.stackexchange.com/questions/21475/… Even going to the next star (from Earth) at .9c, you've got about 2 years subjective or 4 years as viewed from Earth. Also, we're assuming you don't take any time accelerating or decelerating. Nov 9, 2020 at 14:54
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    @TylerH "A sector was defined by the Republic as having a maximum of 50 inhabited star systems to keep sectors at a manageable level.". By that definition worst case scenario is you have to cross on average 25 star systems, and best case a single star over. All of which by Einsteinian physics is not just "a couple of days". I know, I know I shouldn't bring science to a fictional show.
    – Peter M
    Nov 9, 2020 at 15:29
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    It always bothered me when ANY science fiction show/movie has some situation where a ship has to travel from one place to another (outside it's own star system) without using faster than light travel, and yet somehow they can still arrive in only days or weeks, instead of decades or centuries....
    – BBlake
    Nov 13, 2020 at 19:03

1 Answer 1

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In canon there's something called 'Cronau radiation' which was emitted by spaceships when they jumped to and from hyperspace.

The specialist at the station thrust his head forward.

“Sir, sensors are registering anomalous readings and Cronau radiation in the red zone—”

“Wake rotation!” another spec cut in. “We’ve got a mark in from hyperspace, sir—and it’s a big one.

Star Wars: Tarkin

The frog lady's eggs might be vulnerable to this in particular, or other types of radiation which most organisms can ignore.

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    I've taken the liberty of editing a canon quote from the Tarkin novel which mentions Cronau radiation.
    – Valorum
    Nov 9, 2020 at 0:16
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    A good find. The young of most species are usually quite susceptible to radiation injury.
    – Valorum
    Nov 9, 2020 at 0:17
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    Out of canon, I'm pretty sure jumping past or dropping below lightspeed would produce what we know as Cherenkov radiation. Possibly the same thing, since they wouldn't have named it after Pavel Cherenkov Nov 9, 2020 at 16:01
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    @LogicianWithAHat keep in mind that you can not break the light speed barrier in vacuum. Cherenkov radiation will only be observed in medium where c < c_0 Nov 9, 2020 at 16:32
  • @infinitezero - Sublight speeds in Star Wars are limited by something called "ether" which acts as a dragging force. You need to continually accelerate and ships have a "top speed" limited not by fuel or acceleration but shielding and fuel consumption.
    – Valorum
    Nov 9, 2020 at 19:21

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