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Baltimore
USA
3700 San Martin Drive
21218
MD
outreach@stsci.edu
410-338-4444
https://www.stsci.edu/
Distance in lightyears
Hubble
2022-047a
Good
WFC3/UVIS
1.2
16674
https://archive.stsci.edu/proposal_search.php?mission=hst&id=16674
STScI
stsci
https://webbtelescope.org/contents/news-releases/2022/news-2022-047
STSCI-H-p22047a-f-1320x440.png
https://stsci-opo.org/STScI-01GE2ZRKCXR9BPP6FWX0Z9S84C.png
ICRS
2000.0
Position
0
0
Optical
350
Blue
A.2.3
Observation
Space Telescope Science Institute Office of Public Outreach
These images from NASA’s Hubble Space Telescope, taken 22 minutes, 5 hours, and 8.2 hours after NASA’s Double Asteroid Redirection Test (DART) intentionally slammed into Dimorphos, show expanding plumes of ejecta from the asteroid’s body. This event was the world’s first test of the kinetic impact technique using a spacecraft to deflect an asteroid by modifying its orbit.
The Hubble images show ejecta from the impact that appear as rays stretching out from the body of the asteroid. The bolder, fanned-out spike of ejecta to the left of the asteroid is where DART impacted. In the Hubble images, astronomers estimate that the brightness of Didymos increased by 3 times after impact. They’re also particularly intrigued by how that brightness then held steady, even eight hours after impact.
These observations, when combined with data from NASA’s James Webb Space Telescope, will allow scientists to gain knowledge about the nature of the surface of Dimorphos, how much material was ejected by the collision, how fast it was ejected, and the distribution of particle sizes in the expanding dust cloud.
Hubble will observe Dimorphos ten more times over the next three weeks to monitor how the ejecta cloud expands and fades over time.
Hubble observations were conducted in one filter, WFC3/UVIS F350LP, and assigned the color blue.
image/png
Public
DART
Dimorphos
Hubble Views of Dart Impact
hs-2004-07-a-full-tif.tif
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NASA, ESA, J. Li (PSI), STScI
2022-09-28
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