Halley - Giotto
False color image of the nucleus of Comet Halley
Giotto false color image of the nucleus of comet Halley
taken 95 seconds before closest approach from a distance
of 6500 km. Closest approach distance was 596 km. The
nucleus of the comet is roughly 16 x 8 x 8 km. It is
one of the darkest, or least reflective, objects in the
solar system, with an albedo of 0.03.
(Giotto, 86-HC-145)