image credit: NASA/JPL-Caltech/Space Science Institute; image source; larger image
NASA Releases Images of Earth by Distant Spacecraft
For an interesting perspective on the solar system, take a look at this image of Saturn, its rings, and Earth, which is the blue dot near the bottom right (indicated by the arrow). NASA claims that the moon can be seen sticking out on the right of this tiny blue dot slightly to the right of center (compare with the image in this earlier Physics to Go feature). To learn more, visit this NASA news item.
The particles that make up Saturn's rings are in orbit around the planet, in the same way that the planets orbit the sun. Even particles as small as dust move in this kind of orbit. See this additional NASA news item for evidence of dust orbiting the sun in Earth's "tail."