
Copernical Team
SOAR Telescope catches Dimorphos's expanding comet-like tail after DART spacecraft impact

NASA's Double Asteroid Redirection Test (DART) spacecraft intentionally crashed into Dimorphos, the asteroid moonlet in the double-asteroid system of Didymos, on Monday, 26 September 2022. This was the first planetary defense test in which an impact of a spacecraft attempted to modify the orbit of an asteroid.
Two days after DART's impact, astronomers Teddy Kareta (Lowell Observatory) and Matthew Knight (US Naval Academy) used the 4.1-meter Southern Astrophysical Research (SOAR) Telescope at NSF's NOIRLab's Cerro Tololo Inter-American Observatory in Chile to capture the vast plume of dust and debris blasted from the asteroid's surface. In this new image, the dust trail—the ejecta that has been pushed away by the sun's radiation pressure, not unlike the tail of a comet—can be seen stretching from the center to the right-hand edge of the field of view, which at SOAR is about 3.1 arcminutes using the Goodman High Throughput Spectrograph. At Didymos's distance from Earth at the time of the observation, that would equate to at least 10,000 kilometers (6,000 miles) from the point of impact.
European Researchers' Night 2022

On Friday 30 September, ESRIN, our establishment in Italy, welcomed members of the public on site as part of European Researchers' Night.
Joining research centres throughout Europe, European Researchers' Night, promoted each year by the European Commission, is targeted at people of all ages who want to know more about science, research, and space exploration.
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