PIA00346: Color Voyager 2 Image Showing Crescent Uranus

Color Voyager 2 Image Showing Crescent Uranus


This image shows a crescent Uranus, a view that Earthlings never witnessed until Voyager 2 flew near and then beyond Uranus on January 24, 1986. This planet's natural blue-green color is due to the absorption of redder wavelengths in the atmosphere by traces of methane gas. Uranus' diameter is 32,500 miles, a little over four times that of Earth. The hazy blue-green atmosphere probably extends to a depth of around 5,400 miles, where it rests above what is believed to be an icy or liquid mixture (an 'ocean') of water, ammonia, methane, and other volatiles, which in turn surrounds a rocky core perhaps a little smaller than Earth.

Cataloging Keywords:

Name Value Additional Values
Target Uranus Earth
System Uranus Earth
Target Type Planet Earth
Mission Voyager
Instrument Host Voyager 2
Host Type Flyby Spacecraft
Extra Keywords Ammonia, Atmosphere, Color, Haze, Methane, Water
Acquisition Date
Release Date 1998-06-04
Date in Caption 1986-01-24
Image Credit NASA/JPL/USGS
Source photojournal.jpl.nasa.gov/catalog/PIA00346
Identifier PIA00346