Page 40 - Curriculum Visions Dynamic Book

 This false-colour image shows that Saturn also has a red spot. False colour has been used to make the faint spot more visible.
Saturn does not have an atmosphere with clouds of liquid water as on Earth. Instead, its uppermost clouds are made from tiny crystals of solid ammonia. Lower down there may be crystals of ammonium hydrosulfide and, below this, water-ice crystals.
The yellow colour of the clouds (and hence the yellow appearance of the planet when seen with telescopes) is thought to be due to phosphorus compounds within the clouds.
The moons and rings
Saturn has more satellites than any other planet in the solar system. Some of them are large enough to be called moons and to have names. The others are simply named by using S followed by a number. There are 18 named satellites and a dozen with letter- number labels. Each of the distinctive rings is named by using the letters from A (see pages 44–45).
Telesto Calypso
Helene
Prometheus
Pandora
Janus
Epimetheus
Mimas
Enceladus
Pan Atlas
Tethys
Dione
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