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human
[Harry Potter] Do Floo Powder and Portkeys have a limiting range?

Hypothetically, could a Floo linked fireplace be put on a spaceship to Mars/space, so that when the ship arrives astronauts and supplies can be ferried across instantaneously? Or through a Portkey linked to the ship/area in space itself?
gpt
Both are unknown.

Portkeys have a global range and so the wizarding community has not seen exactly where its limits lie.

Floo Powder only works within the Floo Network which only comprises Britain. However, as Floo Powder is a trade secret, we simply don't know what its precise limits are.