Space Sparks Episode 15: Hubble Helps Explain Why Uranus and Neptune Are Different Colours

Astronomers may now know why Uranus and Neptune are different colours. Using observations from the NASA/ESA Hubble Space Telescope, as well as the Gemini North telescope and the NASA Infrared Telescope Facility, researchers have developed a single atmospheric model that matches observations of both planets. The model reveals that excess haze on Uranus builds up in the planet’s stagnant, sluggish atmosphere and makes it appear a lighter tone than Neptune.

More information and download options: http://esahubble.org/videos/heic2209a/

Credit:
Directed by: Bethany Downer and Nico Bartmann
Editing: Nico Bartmann
Web and technical support: Enciso Systems
Written by: Bethany Downer
Music: Stan Dart - Organic Life
Footage and photos: ESA/Hubble, ESA, NASA, STScI