|Plate II. Mars from its outer moon, Deimos, 12 500 miles above the equator. |
The South Polar Cap is on the extreme right.
|Plate III. A typical Martian landscape. |
The inner moon, Phobos, shows a barely visible disk.
|Plate IV. The zodiacal light as seen from Mercury, |
the foreground illuminated by Venus and Earth.
|Plate VI. The Solar System. Sun, planets and larger satellites are shown to scale; |
smaller satellites would actually be invisible. From left to right: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
|Plate VII. Jupiter from its closest large satellite, Io, 261 000 miles distant.|
The dark side of the planet can never be observed from Earth;
auroral displays and chemical reactions in the atmosphere may permit some features to be seen.
|Plate VIII. Jupiter from its closest satellite, Jupiter V (Amalthea), 112 600 miles distant,|
showing typical cloud formations, the Great Red Spot and the shadow of an outer satellite in transit.
|Plate XI. Saturn from its largest moon, Titan, 760 000 miles away. |
Because of its size (3 500 miles in diameter), Titan is one of the few satellites
able to retain an atmosphere; hence the blue sky.
|Plate XIII. The rings of Saturn as seen from just above the cloud layer at 151/2 degrees north.|
|Plate XIV. Uranus from its third moon, Umbriel, 166 000 miles distant.|
The second moon, Ariel, is also visible.
|Plate XV. Neptune from Triton, 220 000 miles away.|
Although appearing some 250 times the area of the full Moon as seen from Earth,
Neptune would give only about the same amount of illumination because of its great distance from the Sun.