File:Twin Tail Revealed in New Hubble Image of Didymos-Dimorphos System Following DART Impact (opo22056a).jpg
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[edit]DescriptionTwin Tail Revealed in New Hubble Image of Didymos-Dimorphos System Following DART Impact (opo22056a).jpg |
English: Two tails of dust ejected from the Didymos-Dimorphos asteroid system are seen in new images from the NASA/ESA Hubble Space Telescope, documenting the lingering aftermath of the NASA’s Double Asteroid Redirection Test (DART) impact on 27 September 2022 at 01:14 CEST. Current data show that DART shortened Dimorphos’ original 11 hour and 55 minute orbit around Didymos by about 32 minutes.Repeated observations from Hubble over the last several weeks have allowed scientists to present a more complete picture of how the system’s debris cloud has evolved over time. The observations show that the ejected material, or “ejecta,” has expanded and faded in brightness as time went on after impact, largely as expected. The twin tail is an unexpected development, although similar behavior is commonly seen in comets and active asteroids. The Hubble observations provide the best-quality image of the double-tail to date.Following impact, Hubble made 18 observations of the system. Imagery indicates the second tail formed between 2-8 October 2022.In this image, DART impacted the Didymos-Dimorphos system from the 10 o’clock direction.The relationship between the comet-like tail and other ejecta features seen at various times in images from Hubble and other telescopes is still unclear, and is something the Investigation Team is currently working to understand. The northern tail is newly developed. In the coming months, scientists will be taking a closer look at the data from Hubble to determine how the second tail developed. There are a number of possible scenarios the team will investigate.[Image Description: A bright blue spot is at the center of the image, which has a black background. The center bright spot has 3 diffraction spikes extending from its core at the 1 o’clock, 7 o’clock, and 10 o’clock positions. Two tails of ejecta that appear as white streams of material extend out from the center at the 2 o’clock and 3 o’clock positions.] |
Date | 20 October 2022 (upload date) |
Source | Twin Tail Revealed in New Hubble Image of Didymos-Dimorphos System Following DART Impact |
Author | NASA, ESA, Jian-Yang Li (PSI), Joe Depasquale (STScI) |
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[edit]ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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Attribution: ESA/Hubble
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Author | Space Telescope Science Institute Office of Public Outreach |
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Source | ESA/Hubble |
Credit/Provider | NASA, ESA, Jian-Yang Li (PSI), Joe Depasquale (STScI) |
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Date and time of data generation | 17:00, 20 October 2022 |
JPEG file comment | New images from NASA’s Hubble Space Telescope of the Didymos-Dimorphos system after NASA’s Double Asteroid Redirection Test (DART), an experiment designed to intentionally smash a spacecraft into a small asteroid to change the motion of the object, reveal the system now has two tails of dust that were ejected from the Sept. 26 impact. Repeated observations from Hubble over the last several weeks have allowed scientists to present a more complete picture of how the system’s debris cloud has evolved over time. Experts expected the ejecta to expand and fade in brightness as time went on after impact. However, the twin tail is a surprising development. The Hubble observations provide the best-quality image of the double-tail to date. Following impact, Hubble made 18 observations of the system. Imagery indicates the second tail formed between Oct. 2 and Oct. 8. In this image, DART impacted the Didymos-Dimorphos system from the 10 o’clock direction. Dimorphos has a retrograde (backwards) orbit around Didymos. Astronomers believe the southern tail is the original plume of ejecta created by the impact visible in Hubble imagery captured several hours after impact. The northern tail is newly developed. In the coming months, scientists will be taking a closer look at the data from Hubble to determine how the second tail developed. There are a number of possible scenarios the team will investigate. The Hubble data were collected as part of Cycle 29 General Observers Program 16674. The Hubble Space Telescope is a project of international cooperation between NASA and ESA. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore, Maryland, conducts Hubble and Webb science operations. STScI is operated for NASA by the Association of Universities for Research in Astronomy, in Washington, D.C. |
Software used | Adobe Photoshop 23.4 (Macintosh) |
File change date and time | 16:00, 18 October 2022 |
Date and time of digitizing | 06:33, 14 October 2022 |
Date metadata was last modified | 12:29, 18 October 2022 |
Unique ID of original document | xmp.did:43d21c5b-f470-4d3c-a5ca-2fd1fda8a20c |
Keywords | Didymos-Dimorphos |
Contact information | outreach@stsci.edu
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
IIM version | 4 |