: Giant, armored creatures that produce the spice and are worshipped as deities by the local Fremen.
: Arrakis has two moons; the larger is 900 km wide and the smaller is 400 km. Unlike Earth's moon, they are too small to affect tides or the planet's gravity significantly. arrakis.7z
Physicists and ecologists often analyze Arrakis to see if such a planet could actually exist. : Giant, armored creatures that produce the spice