NASA has put together a neat picture of our solar system, with various space probes contributing the images:

NASA credits the images as follows:

1. The Mercury image was taken by Mariner 10,
2. The Venus image by Magellan,
3. T the Earth image by Galileo,
4. The Mars image by Viking, and
5. The Jupiter, Saturn, Uranus and Neptune were taken images by Voyager.

Pluto is not shown as no spacecraft has yet visited it.

That omission will eventually be rectified. At that point, the NASA folks will face the difficult decision to make as to whether to include Pluto in this picture. You know, seeing as it's no longer considered a planet!

Of course, the moon isn't it a planet, and it made the cut...