<\/p>\n
Encountering Neptune in 1989, NASA\u2019s Voyager mission<\/a> completed humankind\u2019s first close-up exploration of the four giant outer planets of our solar system. Collectively, since their launch in 1977, the twin Voyager 1 and Voyager 2 spacecraft discovered that Jupiter, Saturn, Uranus, and Neptune were far more complex than scientists had imagined. There was a lot more to be learned.<\/p>\nA NASA Hubble Space Telescope<\/a> observation program called OPAL<\/a> (Outer Planet Atmospheres Legacy) obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in order to understand their atmospheric dynamics and evolution.<\/p>\n\u201cThe Voyagers don\u2019t tell you the full story,\u201d said Amy Simon of NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, who conducted giant planet observations with OPAL.<\/p>\nHubble\u2019s image sharpness is comparable to the Voyager views as they approached the outer planets, and Hubble spans wavelengths from ultraviolet to near-infrared light. Hubble is the only telescope that can provide high spatial resolution and image stability for global studies of cloud coloration, activity, and atmospheric motion on a consistent time basis to help constrain the underlying mechanics of weather and climate systems.<\/p>\n\n\n\n<\/a><\/figure>\nThis is a montage of NASA Hubble Space Telescope views of our solar system\u2019s four giant outer planets: Jupiter, Saturn, Uranus, and Neptune, each shown in enhanced color. The images were taken over nearly 10 years, from 2014 to 2024. This long baseline allows astronomers to track seasonal changes in each planet\u2019s turbulent atmosphere, with the sharpness of the NASA planetary flyby probes of the 1980s. These images were taken under a program called OPAL (Outer Planet Atmospheres Legacy). <\/div>\nNASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley); Image Processing: Joseph DePasquale (STScI)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n\n\t\n\t\tDownload this image<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\n\n\t\n\t\tDownload an unannotated version<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\nAll four of the outer planets have deep atmospheres and no solid surfaces. Their churning atmospheres have their own unique weather systems, some with colorful bands of multicolored clouds, and with mysterious, large storms that pop up or linger for many years. Each outer planet also has seasons lasting many years. (The James Webb Space Telescope\u2019s <\/a>infrared capabilities will be used to probe deep into atmospheres of the outer planets to complement the OPAL observations.)<\/p>\nFollowing the complex behavior is akin to understanding Earth\u2019s dynamic weather as followed over many years, as well as the Sun\u2019s influence on the solar system\u2019s weather. The four distant worlds also serve as proxies for understanding the weather and climate on similar planets orbiting other stars.<\/p>\nPlanetary scientists realized that any one year of data from Hubble, while interesting in its own right, doesn\u2019t tell the full story of the outer planets. Hubble\u2019s OPAL program has routinely observed the planets once a year when they are closest to the Earth.<\/p>\n\u201cBecause OPAL now spans 10 years and counting, our database of planetary observations is ever growing. That longevity allows for serendipitous discoveries, but also for tracking long-term atmospheric changes as the planets orbit the Sun. The scientific value of these data is underscored by the more than 60 publications to date that include OPAL data,\u201d said Simon.<\/p>\nThis payoff continues to be a huge archive of data that has led to a string of remarkable discoveries to share with planetary astronomers around the world. \u201cOPAL also interfaces with other ground- and space-based planetary programs. Many papers from other observatories and space missions pull in Hubble data from OPAL for context,\u201d said Simon.<\/p>\nThe team\u2019s decade of discovery under Hubble\u2019s OPAL program is being presented at the December meeting of the American Geophysical Union in Washington, D.C.<\/a><\/p>\nSOME HIGHLIGHTS:<\/h1>\nJUPITER<\/h1>\n\n\n\n<\/a><\/figure>\nA nine-panel collage showing Hubble images of Jupiter taken under the OPAL (Outer Planet Atmospheres Legacy) program from 2015 to 2024, with approximately true color. OPAL tracks the Great Red Spot (GRS) and other notable changes in Jupiter\u2019s banded cloud structure of zones and belts over time.<\/div>\nNASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley); Image Processing: Joseph DePasquale (STScI)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n\n\t\n\t\tDownload this image<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\n\n\t\n\t\tDownload an unannotated version<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\nJupiter\u2019s bands of clouds present an ever-changing kaleidoscope of shapes and colors. There is always stormy weather on Jupiter: cyclones, anticyclones, wind shear, and the largest storm in the solar system, the Great Red Spot (GRS). Jupiter is covered with largely ammonia ice-crystal clouds on top of an atmosphere that\u2019s tens of thousands of miles deep.<\/p>\n\n
A NASA Hubble Space Telescope<\/a> observation program called OPAL<\/a> (Outer Planet Atmospheres Legacy) obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in order to understand their atmospheric dynamics and evolution.<\/p>\n\u201cThe Voyagers don\u2019t tell you the full story,\u201d said Amy Simon of NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, who conducted giant planet observations with OPAL.<\/p>\nHubble\u2019s image sharpness is comparable to the Voyager views as they approached the outer planets, and Hubble spans wavelengths from ultraviolet to near-infrared light. Hubble is the only telescope that can provide high spatial resolution and image stability for global studies of cloud coloration, activity, and atmospheric motion on a consistent time basis to help constrain the underlying mechanics of weather and climate systems.<\/p>\n\n\n\n<\/a><\/figure>\nThis is a montage of NASA Hubble Space Telescope views of our solar system\u2019s four giant outer planets: Jupiter, Saturn, Uranus, and Neptune, each shown in enhanced color. The images were taken over nearly 10 years, from 2014 to 2024. This long baseline allows astronomers to track seasonal changes in each planet\u2019s turbulent atmosphere, with the sharpness of the NASA planetary flyby probes of the 1980s. These images were taken under a program called OPAL (Outer Planet Atmospheres Legacy). <\/div>\nNASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley); Image Processing: Joseph DePasquale (STScI)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n\n\t\n\t\tDownload this image<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\n\n\t\n\t\tDownload an unannotated version<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\nAll four of the outer planets have deep atmospheres and no solid surfaces. Their churning atmospheres have their own unique weather systems, some with colorful bands of multicolored clouds, and with mysterious, large storms that pop up or linger for many years. Each outer planet also has seasons lasting many years. (The James Webb Space Telescope\u2019s <\/a>infrared capabilities will be used to probe deep into atmospheres of the outer planets to complement the OPAL observations.)<\/p>\nFollowing the complex behavior is akin to understanding Earth\u2019s dynamic weather as followed over many years, as well as the Sun\u2019s influence on the solar system\u2019s weather. The four distant worlds also serve as proxies for understanding the weather and climate on similar planets orbiting other stars.<\/p>\nPlanetary scientists realized that any one year of data from Hubble, while interesting in its own right, doesn\u2019t tell the full story of the outer planets. Hubble\u2019s OPAL program has routinely observed the planets once a year when they are closest to the Earth.<\/p>\n\u201cBecause OPAL now spans 10 years and counting, our database of planetary observations is ever growing. That longevity allows for serendipitous discoveries, but also for tracking long-term atmospheric changes as the planets orbit the Sun. The scientific value of these data is underscored by the more than 60 publications to date that include OPAL data,\u201d said Simon.<\/p>\nThis payoff continues to be a huge archive of data that has led to a string of remarkable discoveries to share with planetary astronomers around the world. \u201cOPAL also interfaces with other ground- and space-based planetary programs. Many papers from other observatories and space missions pull in Hubble data from OPAL for context,\u201d said Simon.<\/p>\nThe team\u2019s decade of discovery under Hubble\u2019s OPAL program is being presented at the December meeting of the American Geophysical Union in Washington, D.C.<\/a><\/p>\nSOME HIGHLIGHTS:<\/h1>\nJUPITER<\/h1>\n\n\n\n<\/a><\/figure>\nA nine-panel collage showing Hubble images of Jupiter taken under the OPAL (Outer Planet Atmospheres Legacy) program from 2015 to 2024, with approximately true color. OPAL tracks the Great Red Spot (GRS) and other notable changes in Jupiter\u2019s banded cloud structure of zones and belts over time.<\/div>\nNASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley); Image Processing: Joseph DePasquale (STScI)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n\n\t\n\t\tDownload this image<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\n\n\t\n\t\tDownload an unannotated version<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\nJupiter\u2019s bands of clouds present an ever-changing kaleidoscope of shapes and colors. There is always stormy weather on Jupiter: cyclones, anticyclones, wind shear, and the largest storm in the solar system, the Great Red Spot (GRS). Jupiter is covered with largely ammonia ice-crystal clouds on top of an atmosphere that\u2019s tens of thousands of miles deep.<\/p>\n\n
\u201cThe Voyagers don\u2019t tell you the full story,\u201d said Amy Simon of NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, who conducted giant planet observations with OPAL.<\/p>\n
Hubble\u2019s image sharpness is comparable to the Voyager views as they approached the outer planets, and Hubble spans wavelengths from ultraviolet to near-infrared light. Hubble is the only telescope that can provide high spatial resolution and image stability for global studies of cloud coloration, activity, and atmospheric motion on a consistent time basis to help constrain the underlying mechanics of weather and climate systems.<\/p>\n
All four of the outer planets have deep atmospheres and no solid surfaces. Their churning atmospheres have their own unique weather systems, some with colorful bands of multicolored clouds, and with mysterious, large storms that pop up or linger for many years. Each outer planet also has seasons lasting many years. (The James Webb Space Telescope\u2019s <\/a>infrared capabilities will be used to probe deep into atmospheres of the outer planets to complement the OPAL observations.)<\/p>\nFollowing the complex behavior is akin to understanding Earth\u2019s dynamic weather as followed over many years, as well as the Sun\u2019s influence on the solar system\u2019s weather. The four distant worlds also serve as proxies for understanding the weather and climate on similar planets orbiting other stars.<\/p>\nPlanetary scientists realized that any one year of data from Hubble, while interesting in its own right, doesn\u2019t tell the full story of the outer planets. Hubble\u2019s OPAL program has routinely observed the planets once a year when they are closest to the Earth.<\/p>\n\u201cBecause OPAL now spans 10 years and counting, our database of planetary observations is ever growing. That longevity allows for serendipitous discoveries, but also for tracking long-term atmospheric changes as the planets orbit the Sun. The scientific value of these data is underscored by the more than 60 publications to date that include OPAL data,\u201d said Simon.<\/p>\nThis payoff continues to be a huge archive of data that has led to a string of remarkable discoveries to share with planetary astronomers around the world. \u201cOPAL also interfaces with other ground- and space-based planetary programs. Many papers from other observatories and space missions pull in Hubble data from OPAL for context,\u201d said Simon.<\/p>\nThe team\u2019s decade of discovery under Hubble\u2019s OPAL program is being presented at the December meeting of the American Geophysical Union in Washington, D.C.<\/a><\/p>\nSOME HIGHLIGHTS:<\/h1>\nJUPITER<\/h1>\n\n\n\n<\/a><\/figure>\nA nine-panel collage showing Hubble images of Jupiter taken under the OPAL (Outer Planet Atmospheres Legacy) program from 2015 to 2024, with approximately true color. OPAL tracks the Great Red Spot (GRS) and other notable changes in Jupiter\u2019s banded cloud structure of zones and belts over time.<\/div>\nNASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley); Image Processing: Joseph DePasquale (STScI)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n\n\t\n\t\tDownload this image<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\n\n\t\n\t\tDownload an unannotated version<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\nJupiter\u2019s bands of clouds present an ever-changing kaleidoscope of shapes and colors. There is always stormy weather on Jupiter: cyclones, anticyclones, wind shear, and the largest storm in the solar system, the Great Red Spot (GRS). Jupiter is covered with largely ammonia ice-crystal clouds on top of an atmosphere that\u2019s tens of thousands of miles deep.<\/p>\n\n
Following the complex behavior is akin to understanding Earth\u2019s dynamic weather as followed over many years, as well as the Sun\u2019s influence on the solar system\u2019s weather. The four distant worlds also serve as proxies for understanding the weather and climate on similar planets orbiting other stars.<\/p>\n
Planetary scientists realized that any one year of data from Hubble, while interesting in its own right, doesn\u2019t tell the full story of the outer planets. Hubble\u2019s OPAL program has routinely observed the planets once a year when they are closest to the Earth.<\/p>\n
\u201cBecause OPAL now spans 10 years and counting, our database of planetary observations is ever growing. That longevity allows for serendipitous discoveries, but also for tracking long-term atmospheric changes as the planets orbit the Sun. The scientific value of these data is underscored by the more than 60 publications to date that include OPAL data,\u201d said Simon.<\/p>\n
This payoff continues to be a huge archive of data that has led to a string of remarkable discoveries to share with planetary astronomers around the world. \u201cOPAL also interfaces with other ground- and space-based planetary programs. Many papers from other observatories and space missions pull in Hubble data from OPAL for context,\u201d said Simon.<\/p>\n
The team\u2019s decade of discovery under Hubble\u2019s OPAL program is being presented at the December meeting of the American Geophysical Union in Washington, D.C.<\/a><\/p>\nSOME HIGHLIGHTS:<\/h1>\nJUPITER<\/h1>\n\n\n\n<\/a><\/figure>\nA nine-panel collage showing Hubble images of Jupiter taken under the OPAL (Outer Planet Atmospheres Legacy) program from 2015 to 2024, with approximately true color. OPAL tracks the Great Red Spot (GRS) and other notable changes in Jupiter\u2019s banded cloud structure of zones and belts over time.<\/div>\nNASA, ESA, Amy Simon (NASA-GSFC), Michael H. Wong (UC Berkeley); Image Processing: Joseph DePasquale (STScI)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n\n\t\n\t\tDownload this image<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\n\n\t\n\t\tDownload an unannotated version<\/span>\n\t\t<\/circle><\/path><\/svg>\n\t<\/a><\/div>\nJupiter\u2019s bands of clouds present an ever-changing kaleidoscope of shapes and colors. There is always stormy weather on Jupiter: cyclones, anticyclones, wind shear, and the largest storm in the solar system, the Great Red Spot (GRS). Jupiter is covered with largely ammonia ice-crystal clouds on top of an atmosphere that\u2019s tens of thousands of miles deep.<\/p>\n\n
Jupiter\u2019s bands of clouds present an ever-changing kaleidoscope of shapes and colors. There is always stormy weather on Jupiter: cyclones, anticyclones, wind shear, and the largest storm in the solar system, the Great Red Spot (GRS). Jupiter is covered with largely ammonia ice-crystal clouds on top of an atmosphere that\u2019s tens of thousands of miles deep.<\/p>\n