Asteroids close up

Asteroids close up

. These images of the asteroids 951 Gaspra (left) and 243 Ida (right) were taken by the Jupiter-bound Galileo spacecraft on 29 October 1991 and 28 August 1993, respectively. Both objects have irregular, elongated shapes. The illuminated part of Gaspra is 18 thousand meters long, from lower left to upper right, and it contains an abundance of small craters. Ida is about 52 thousand meters in length, and is accompanied by a small moon (right center), named Dactyl. (Courtesy of JPL and NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University