Half of the green giant's glory rests in what is the widest and heaviest moon observed yet. The hard questions easily arise at the thought of Laythe, such as: Why? How? Is it safe from Jool's radiation? How soon can we go? Can we make snacks just as good once we get there and not live on dehydrated stuff forever?

Like Kerbin, Laythe possesses "7 seas" inviting players to attempt circumnavigation challenges. Elements of active volcanism and tectonics, among a few surprises, wait to be found by daring adventurers.

Rational Resources Classification:

Ocean	Surface	Atmosphere	Exosphere
Terra	Rock-Ice	Terra	None

*Terra atmosphere template contains an exosphere template.

From the PDF included in the download:

Bulk Params		Orbital and Rotational Params
Classification	Moon (Jool)	Semi-major Axis	87,640 km
Radius	1,100 km sea level, 1,100.1 km mean	Periapsis	86,764 km
Mass	1.03120×1023 kg	Apoapsis	88,516 km
Gravitational Parameter	6.88231×1012 m3/s2	Orbit eccentricity	0.01
Mean density	18,490 kg/m3	Orbit inclination	0.2°
Surface gravity	0.58 g ASL	Longitude of ascending node	120°
Escape velocity	3,537 m/s	Argument of periapsis	120°
Bond Albedo	0.25	Sidereal orbit period	2.6690 days
Solar irradiance	53.2 W/m2	Synodic period	2.6707 days
Black-body temperature	115 K	Mean orbital velocity	4,776 m/s
		Sidereal rotation period	2.6690 days
		Solar day	2.6707 days
		Synchronous orbit altitude	N/A
		Sphere of influence	9,067 km

Atmosphere
Overall height	75 km
Pressure	0.6 atm sea level
Mean temperature	280 K sea level
Mean molecular weight	28.4 g/mol
Composition	90% N2, 10% O2