ផ្កាយព្រះច័ន្ទ
The ringed giant, the least dense planet: its average density is lower than water's.
NASA, ESA, A. Simon (Goddard Space Flight Center), and M.H. Wong (University of California, Berkeley) (CC BY 4.0)
A giant light enough to float in water, if you could find a bathtub big enough, wearing the most spectacular rings in the solar system.
Saturn is a gas giant made mostly of hydrogen and helium. Its bright rings are made of countless pieces of water ice and rock, from dust grains to boulders; they are hundreds of thousands of kilometres wide but mostly only tens of metres thick.
Its average density, about 0.69 g/cm³, is lower than that of water. Its largest moon, Titan, has a thick atmosphere, and the small moon Enceladus sprays water ice from an underground ocean.
ផ្កាយព្រះច័ន្ទក្នុងមូលដ្ឋានចំណេះដឹង
ប្រភពទិន្នន័យ
Tools and lessons use simplified models for learning only. They must not be used for navigation, mission planning or any operational decision. Certificates are free and non-accredited. អានការលុបចោលមាតិកាអប់រំ