Astronomers Just Practiced What Would Happen if a Potentially Dangerous Asteroid was Detected universetoday storybywill
“The independent infrared data collected from space greatly benefited the results from this exercise. NEOWISE was able to confirm Apophis’ rediscovery while also rapidly gathering valuable information that could be used in planetary defense assessments, such as its size, shape, and even clues as to its composition and surface properties.”
Still image from NASA’s “Eyes on Asteroids,” which uses scientific data to help visualize asteroid and comet orbits around the Sun. Credit: NASA/JPL-Caltech The NEOWISE measurements also allowed for updated assessments of the asteroid’s size. As they indicated in the study, Apophis is an elongated object with an “effective spherical diameter” of 270 to 410 meters . These improved measurements allowed the research team and participating scientists at NASA Ames Research Center to place new estimates on the impact energy this asteroid would deliver.
This collaborative effort could help disaster agencies plan for future impacts and develop possible mitigation and evacuation strategies. Michael Kelley, a program scientist with PDCO who guided the exercise participants,“Seeing the planetary defense community come together during the latest close approach of Apophis was impressive.
As noted, a major impact is something humanity would like to prevent. A considerable amount of resources are currently directed towards developing every and all means for avoiding that. But the single-greatest tool we have in our arsenal is the regular tracking, which ensures that we are prepared for whatever threats might emerge someday.
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