No, literally "meteorite" in original text. It is used as an example of a completely implausible event.

More likely this: https://en.wikipedia.org/wiki/UR-77_Meterorit, but in the Russian it's still not clear. The translation is not perfect, I tried to improve it a bit below:

> Вас просят (условно) рассчитать возможность правозащиты в разных условиях, включая атаку тюрем метеоритами. Вы уточняете про метеориты, Вам говорят - это так, перестраховка для расчетов, ничего такого не будет

They ask you (hypothetically) to work out the probability that human rights could be protected in various circumstances, including using meteorites to attack prisons. You try to clarify about the meteorites, they tell you it's just to be confident in the estimations, nothing like this would actually happen.

I see the word "метеорита" in the original source, which is indeed meteorite (+ declension). I do not think it could be mistranslated as artillery or missile, although I am not a native Russian speaker (I had to learn Russian at school for 3 or 4 years and I have forgotten most of it, it was a long time ago). I think the writer was going for a metaphor, a made up example of being tasked with preparing for something considered so improbable that the preparation was de-prioritized.