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Kinetic impulse weapons (startrek.website)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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"Full Impulse" is generally considered to be 0.25c.
The force of an impact of a Voyager-sized (700 kilotons) mass at that speed would be many times greater than that of the asteroid that killed the dinosaurs.
And I think its reasonable to assume that 0.25c isn't a hard limit, but rather an agreed-upon speed limit for starships.
If you could make an object go even faster, that energy goes up by a few orders of magnitude.
0.9c sounds doable. I don't know about any faster, but maybe?

At that speed, the force of Voyager hitting a planet would be at least hundreds of times greater than the aforementioned asteroid. This sounds like it would completely sterilize the planet.

Which begs the question, why don't we see weapons like this in star trek? I'd figure the Federation wouldn't use them, but the Federation isn't alone.

One argument I tend to see when this comes up is, that the shields would block it. Which then makes you think, if they could block that, then what couldn't they block? It makes them pretty much invincible. So I don't think that's it.

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[–] HaphazardFinesse 2 points 1 year ago

In the Star Trek universe, if you're intent on "glassing" a planet, it's in one of two scenarios:

The planet inhabitants can't fight off a single star ship, in which case you could just park in orbit and bombard to your heart's content, with the option of either precision strikes or complete annihilation, without expending anything other than the energy it takes to power the ship.
The inhabitants can fight off a star ship, in which case they likely have the technology to detect such a weapon at sufficient range to intercept/destroy/redirect it, or planetary shielding powerful enough to stop it.

In the latter case, you could put the effort into adding a cloaking device to the weapon to get around that. But in that case, why not just use a regular cloaked ship to delivery some other payload? There are tons of examples in TNG of narrowly-averted planet-killing disasters only prevented by careful engineering. Probably way easier to actually cause the disaster. Examples include igniting the atmosphere, causing geographic instability/earthquakes/volcanic reactions, exploding the system's star, crashing a natural moon into the planet, unleashing a biological weapon...