Report

Evidence for Crystalline Water and Ammonia Ices on Pluto's Satellite Charon

+ See all authors and affiliations

Science  07 Jan 2000:
Vol. 287, Issue 5450, pp. 107-109
DOI: 10.1126/science.287.5450.107

You are currently viewing the abstract.

View Full Text

Abstract

Observations have resolved the satellite Charon from its parent planet Pluto, giving separate spectra of the two objects from 1.0 to 2.5 micrometers. The spectrum of Charon is found to be different from that of Pluto, with water ice in crystalline form covering most of the surface of the satellite. In addition, an absorption feature in Charon's spectrum suggests the presence of ammonia ices. Ammonia ice–water ice mixtures have been proposed as the cause of flowlike features observed on the surfaces of many icy satellites. The existence of such ices on Charon may indicate geological activity in the satellite's past.

View Full Text

Related Content