Family Portrait (Voyager)

[1] The frames used to compose the image were the last photographs taken by either Voyager spacecraft (which continued to relay other telemetry afterward).

Astronomer Carl Sagan, who was part of the Voyager imaging team, campaigned for many years to have the pictures taken.

[2] Six planets are visible in the mosaic, from left to right: Jupiter, Earth, Venus, Saturn, Uranus, and Neptune.

[4] Mars could not be detected by the Voyager cameras due to its position resulting in it only producing a thin crescent from the viewpoint of the spacecraft, and Pluto (which, in 1990, was still considered a planet) was not included because its small size and distance from the Sun left it too dim to image.

[3][4] Mars could have been imaged through a clear filter rather than the colored ones used, but by the time this was evident, the process was too far advanced to make the changes.