File:Examining Ice Giants With NASA’s Webb Telescope (51146331850).jpg
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editDescriptionExamining Ice Giants With NASA’s Webb Telescope (51146331850).jpg |
Far-flung Uranus and Neptune — the ice giants of our solar system — are as mysterious as they are distant. Soon after its launch in 2021, NASA’s James Webb Space Telescope will change that by unlocking secrets of the atmospheres of both planets. The cold and remote giant planets Uranus and Neptune are nicknamed the “ice giants” because their interiors are compositionally different from Jupiter and Saturn, which are richer in hydrogen and helium, and are known as the “gas giants.” The ice giants are also much smaller than their gaseous cousins, being intermediate in size between terrestrial planets and the gas giants. They represent the least-explored category of planet in our solar system. Scientists using Webb plan to study the circulation patterns, chemistry and weather of Uranus and Neptune in a way only Webb can. “The key thing that Webb can do that is very, very difficult to accomplish from any other facility is map their atmospheric temperature and chemical structure,” explained the studies’ leader, Leigh Fletcher, an associate professor of planetary science at the University of Leicester in the United Kingdom. “We think that the weather and climate of the ice giants are going to have a fundamentally different character compared to the gas giants. That’s partly because they’re so far away from the Sun, they’re smaller in size and rotate slower on their axes, but also because the blend of gases and the amount of atmospheric mixing is very different compared with Jupiter and Saturn.” All the gases in the upper atmospheres of Uranus and Neptune have unique chemical fingerprints that Webb can detect. Crucially, Webb can distinguish one chemical from another. If these chemicals are being produced by sunlight interacting with the atmosphere, or if they’re being redistributed from place to place by large-scale circulation patterns, Webb will be able to see that. These studies will be conducted through a Guaranteed Time Observations (GTO) program of the solar system led by Heidi Hammel, a planetary scientist and Webb Interdisciplinary Scientist. She is also Vice President for Science at the Association of Universities for Research in Astronomy (AURA) in Washington, D.C. Hammel’s program will demonstrate the capabilities of Webb for observing solar system objects and exercise some of Webb’s specific techniques for objects that are bright and/or are moving in the sky. Read more: www.nasa.gov/feature/goddard/2020/examining-ice-giants-wi... Image: This Voyager 2 image of Neptune shows a cold and dark wind-whipped world. In 1989, NASA’s Voyager 2 became the first and only spacecraft to observe the planet Neptune, passing about 3,000 miles above the planet’s north pole. Credits: NASA/JPL-Caltech Subscribe to our YouTube channel Follow us on Instagram |
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Source | Examining Ice Giants With NASA’s Webb Telescope |
Author | NASA's James Webb Space Telescope from Greenbelt, MD, USA |
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This image was originally posted to Flickr by James Webb Space Telescope at https://flickr.com/photos/50785054@N03/51146331850. It was reviewed on 17 June 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
17 June 2023
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Author | Space Telescope Science Institute Office of Public Outreach |
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Source | STScI |
Credit/Provider | NASA/JPL-Caltech |
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Date and time of data generation | 19 February 2020 |
Width | 2,188 px |
Height | 2,185 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop 21.1 (Windows) |
File change date and time | 09:07, 26 February 2020 |
Exif version | 2.31 |
Color space | Uncalibrated |
Date and time of digitizing | 05:38, 4 November 2019 |
Date metadata was last modified | 04:07, 26 February 2020 |
Unique ID of original document | xmp.did:028d002b-40f9-4e75-8285-150fd7b0fde9 |
Keywords | Neptune |
Contact information | outreach@stsci.edu
3700 San Martin Drive Baltimore, MD, 21218 USA |
IIM version | 4 |