Happy 30th Birthday to #Hubble Space Telescope! This amazing facility has helped to create an incredible record of the Ice Giant Systems, so we look back at some of our fav #Uranus images, starting with WFPC2 images a mere 8 years after Voyager's flyby (Aug 1994): #Hubble30 pic.twitter.com/JLMOHTiGD2
— IceGiants (@IcyGiants) April 23, 2020
As Uranus' southern pole began to turn away from the Sun and summer moved on, NICMOS captured Uranus in the near-infrared in 1997, probing different cloud layers in Uranus' frigid atmosphere, as well as spotting 8 small satellites. #Hubble30https://t.co/iHqL5oT58P pic.twitter.com/CYrEd8QX1o
— IceGiants (@IcyGiants) April 23, 2020
NICMOS #Uranus observations in 1998 spotted incredibly bright storm clouds in the northern winter (to the right), as the south polar 'cap' of aerosols (left) appeared to change to a bright south polar 'collar' as the summer marched on #Hubble30 https://t.co/jy4BooclCr pic.twitter.com/WH20nCP5Qa
— IceGiants (@IcyGiants) April 23, 2020
In Jul-Aug 2006, #Hubble30 ACS captured #Uranus near the end of southern summer, with the south pole disappearing to winter. The observations discovered an enormous dark vortex (1700x3000 km), and watched the moon Ariel moving across the face of Uranus.https://t.co/dzF9KB5KfG pic.twitter.com/Zv5rLrSzMr
— IceGiants (@IcyGiants) April 23, 2020
Since equinox, scientists have continued to track #Uranus seasonal evolution from instruments like #Hubble30 STIS (right), compared to Keck images (left), between 2003 and 2015, revealing the formation of a north polar cap & collar to mirror those in '94:https://t.co/BvgS3wP0Ga pic.twitter.com/tEOZhZLkBl
— IceGiants (@IcyGiants) April 23, 2020
#Hubble30 has continued to observe #Uranus every year through to the middle of northern spring, including this Nov 2018 image. We hope that Hubble will continue to add to this unique record of a seasonal Ice Giant for years to come!https://t.co/gRePQx28fZ pic.twitter.com/fhNyJQRlj8
— IceGiants (@IcyGiants) April 23, 2020
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