Alice Averlong🏳️⚧️more sci-fi should deal with the fact that your average Enterprise starship has a fuel tank measured in Chicxulubs of antimatter
"a spaceship crashed" shouldn't be a bunch of wreckage in a forest and plucky scavengers finding neat bits of technology to resell, it should be a "so the dominant species on that planet has been forever changed"
even if it blows up in orbit, that's still 90 teratons of TNT going off. That's equivalent to a solar flare.
You're still going to Have A Bad Day.
oh, to clarify, when I say "Chicxulubs of antimatter", I don't mean, like, the amount of antimatter is equivalent to the mass of the Chicxulub asteroid: I mean the amount of antimatter has energy approximately equal to the impact at Chicxulub that extincted the dinosaurs.
that's the thing with antimatter FTL starships: they're super dangerous in multiple ways, and that's an inherent part of how they work.
even ignoring them potentially being armed, even ignoring that they can go very fast (and what happens when they crash into something?), just the power they'd need to store to be able to do all that makes them weapons of mass destruction on a scale we can't even conceive of
like, every nuclear weapon on the planet is like 1.5 gigatons. A full on world war 3 is less than ONE TEN-THOUSANDTH as energetic as the fuel tanks of an enterprise
which makes me wonder about the fact that anyone lets these starships orbit their planets, let alone sometimes they manage to land.
Earth keeping their shipyards at Mars is a good start, I'd think if I was in charge of biosphere protection, I'd be more like "yeah ya'll can park at Jupiter, and take some chemical rockets down to Earth"
because, yeah, they may be very safe normally, but when even one of these spaceships could sterilize a hemisphere from orbit, you really don't want them anywhere near you, no matter how well-maintained and friendly the operators of that star ship is
yeah it's a one in a million chance that the warp core ruptures, but if that one in a million chance hits, it kills BILLIONS.
so... no. keep that shit far enough away. Maybe if you're nice you can park on the far side of the moon
maybe that's the depressing answer to the Fermi Paradox:
The kind of energy storage needed to travel the stars is so high that every civilization that attempts is eventually has a Bad Accident that Chicxulubs their whole species.
The cosmo is full of planets which have a few decaying unmaintained space stations in orbit of a planet where the dominant species is a small non-sapient rodent, insect or fish.
There's a printout in one of those decaying space station of the last transmission of an FTL ship, and it's either "oops" or "oh shit"
Gazoche