File:Hubble Reveals Dynamic Atmospheres of Uranus, Neptune.png
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[edit]DescriptionHubble Reveals Dynamic Atmospheres of Uranus, Neptune.png |
English: The two major planets beyond Saturn have only been visited once by a spacecraft, albeit briefly. NASA's Voyager 2 spacecraft swung by Uranus in 1986, and Neptune in 1989. Our robotic deep-space tourist snapped the only close-up, detailed images of these monstrous worlds. For Neptune, the images revealed a planet with a dynamic atmosphere with two mysterious dark vortices. Uranus, however, appeared featureless. But these views were only brief snapshots. They couldn't capture how the planets' atmospheres change over time, any more than a single snapshot of Earth could tell meteorologists about weather behavior. And, they go through protracted seasonal changes in their multi-decades-long orbits. Ever since the Voyager encounter, the Hubble Space Telescope has provided an opportunity to monitor these worlds like a diligent weatherman.
Since Hubble's launch in 1990, astronomers have used it to amass an album of outer planet images. Yearly monitoring of these giant worlds is now allowing astronomers to study long-term seasonal changes, as well as capture transitory weather patterns. One such elusive event is yet another dark storm on Neptune, shown in the latest Hubble image of the planet (right). The telescope's new snapshot of Uranus (left) shows that the ice giant is not a planetary wallflower. A vast bright polar cap across the north pole dominates the image. The cap, which may form due to seasonal changes in atmospheric flow, has become much more prominent than in previous observations dating back to the Voyager 2 flyby, when the planet, in the throes of winter, looked bland. |
Date | |
Source | https://www.flickr.com/photos/144614754@N02/40211144023/ |
Author | NASA Hubble |
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This image was originally posted to Flickr by NASA Hubble at https://flickr.com/photos/144614754@N02/40211144023 (archive). It was reviewed on 26 February 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
26 February 2020
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Source | STScI |
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Author | Space Telescope Science Institute Office of Public Outreach |
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Contact information | outreach@stsci.edu
3700 San Martin Drive Baltimore, MD, 21218 USA |
Horizontal resolution | 28.34 dpc |
Vertical resolution | 28.34 dpc |
File change date and time | 15:57, 29 January 2019 |