Earth's Moon

[Brieus]

I haven't purchased Odyssey yet, but somebody tell me that the first footfall on the Moon is credited to Neil Armstrong.

Also, I was just looking at the Sol system map again, and I noticed Triton has a red semi-circle around it. Does that mean you can only land on it with Odyssey?

 

[Sapyx]

Red semi-circles indicate that a permit for that specific planet is required in order to land on them.

There were three known permit-locked planets in Horizons: Triton (Sol), Lave 2 and Diso 5c.

I haven't heard reports of any additional Odyssey-only landable planets being permit-locked.

No, nobody knows how to actually get any of those permits.