Ganymede's surface is heavily cratered and crossed by strange grooves and ridges, wich have been described as tire tracks in the desert

The grooves on the soles of shoes and boots are known as the treads. Running shoes may have spikes for grip on grass running tracks. Football boots have studs, also for grip on an often slippery, grass football pitch.

No, triang is oo gauge and will connect to ho as long as the track code is OK. But N gauge is much smaller.

The original Ping Eye golf clubs had v grooves.

I assume you mean GROOVES - the Glacial Grooves were formed by the receeding glaciers.