The Outer Planets: Hubble’s Continuing Legacy

  • Released Tuesday, December 15, 2020

What is OPAL?

OPAL (Outer Planet Atmospheres Legacy) is a project to obtain long time baseline observations of the outer planets in order to understand their atmospheric dynamics and evolution as gas giants.

The yearly observations from OPAL throughout the remainder of Hubble's operation will provide an important legacy of time-domain images for use by planetary scientists.

Viewers might notice that some of the images of the same planets appear to be different colors. This is due to the fact that over the years, from Voyager to Hubble, many different instruments, and many different filters have been used.

For more information, visit

Music Credits:
“The Granted Wish” by Nicholas Techer [BMI] via Koka Media [SACEM], Universal Publishing Production Music France [SACEM], and Universal Production Music.

“Voyage Spectacular” by Rob Lane [PRS] via Abbey Road Masters [PRS], and Universal Production Music.

“Celestial Waves” by Harry Vaman [SACEM] via Koka Media [SACEM], and Universal Production Music.

“Solar Horizons” by David Rogers [PRS] and Paul Shaw [PRS] via Atmosphere Music Ltd [PRS], and Universal Production Music.

“Visionary” by Andy Blythe [PRS] and Marten Joustra [PRS] via Ingenious Music Publishing Ltd. [PRS], and Universal Production Music.

Vertical Version

This vertical version of the episode is for IGTV or Snapchat. The IGTV episode can be pulled into Instagram Stories and the regular Instagram feed.


Please give credit for this item to:
NASA's Goddard Space Flight Center

Release date

This page was originally published on Tuesday, December 15, 2020.
This page was last updated on Wednesday, May 3, 2023 at 1:44 PM EDT.


This visualization is related to the following missions: