NewsUSA and CanadaImpacted asteroid leaves long trail of dust

    Impacted asteroid leaves long trail of dust


    This image provided by NOIRLab shows a trail of dust and debris caused by the impact of NASA’s DART spacecraft with the asteroid Dimorphos on Sept. 26, 2022. (Teddy Kareta, Matthew Knight/NOIRLab via AP)


    An asteroid that was rammed by a NASA space probe is now leaving thousands of kilometers of dust and debris in its wake after the impact.

    Astronomers captured the scene millions of miles away with a telescope in Chile. The observations two days after last month’s planetary defense test were recently released by a US National Science Foundation laboratory in Arizona.

    The image shows a comet-like tail 10,000 kilometers (6,000 miles) long, made up of dust and miscellaneous material ejected from the impact crater.

    That trail is rapidly moving away from the asteroid, largely due to solar radiation pressure, said Matthew Knight of the U.S. Naval Research Laboratory, who made the observation with Lowell Observatory’s Teddy Kareta using the SOAR telescope. (Southern Astrophysical Research Telescope), in Chile.

    Scientists expect the tail to grow even longer and spread out further, becoming so faint that it will be undetectable.

    “At that point, the material will be like any other dust floating in the solar system,” Knight said Tuesday in an email.

    More observations are planned to determine how much and what kind of material was ejected from Dimorphos, a smaller 160-meter satellite orbiting a larger asteroid, Didymos.

    Launched nearly a year ago, NASA’s DART space probe was destroyed in the collision. The $325 million mission to deflect the asteroid’s orbit was a rehearsal for the day a large space body heads for Earth. Dimorphos and Didymos never posed and do not pose a danger to the planet, NASA said.


    The Associated Press receives support for its health and science coverage from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for the content.

    Source: El Nuevo Herald

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