Question on: SS2 Physics - Space Physics and Astrophysics

Terrestrial planets, including Mercury, Venus, Earth, and Mars, are rocky planets with solid surfaces. They have relatively high densities and lack extensive atmospheres compared to gas giants. Gas giants, such as Jupiter and Saturn, are composed primarily of hydrogen and helium, with a smaller amount of heavier elements. They have thick atmospheres and lack a well-defined solid surface. Gas giants also have a higher number of moons and a more prominent ring system compared to terrestrial planets.