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Uranus
Hubble’s October 25th view of Uranus puts the planet’s bright northern polar hood in the spotlight. It’s springtime in the northern hemisphere and the increase in ultraviolet radiation absorbed from the Sun seems to be causing the polar region to brighten. Researchers are studying how the brightening polar hood results from changes in the concentration of atmospheric methane gas and the characteristics of haze particles, as well as the atmospheric flow patterns. Curiously, even as the atmospheric hood gets brighter, the sharp southernmost boundary remains fixed at the same latitude. This has been constant over the past several years of OPAL observations, perhaps because a jet stream is setting up a barrier at that latitude of 43 degrees.
About the Data
- Data DescriptionData DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.The HST observations include those from program 16266 (A. Simon)
- InstrumentInstrumentThe science instrument used to produce the data.UVIS/WFC3
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.25 October 2021
- FiltersFiltersThe camera filters that were used in the science observations.F467M, F547M, F657N, F845M
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.Uranus
- Object DescriptionObject DescriptionThe type of astronomical object.Gas Giant
- Release DateNovember 18, 2021
- Science ReleaseHubble’s Grand Tour of the Outer Solar System
- CreditsNASA, ESA, Amy Simon (NASA-GSFC), Michael Wong (UC Berkeley); Image Processing: Alyssa Pagan (STScI)
These images are a composite of separate exposures acquired by the WFC3 instrument on the Hubble Space Telescope. Several filters were used to sample medium wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue: F467M, Green: F547M, Orange: F657N, Red: F845M

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Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov