மனிதர்களுக்கு ஆபத்தை விளைவிக்கிறதா NASA! | NASA's DART mission explained in tamil

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This video explains NASA's plan to deflect asteroids that can hit earth by using DART spacecraft. After 10 months flying in space, NASA’s Double Asteroid Redirection Test (DART) – the world’s first planetary defense technology demonstration – successfully impacted its asteroid target Dimorphos on Monday, Sept. 26, 2022, the agency’s first attempt to move an asteroid in space. During the spacecraft’s final moments before impact, its Didymos Reconnaissance and Asteroid Camera for Optical navigation (DRACO) imager took four images capturing its terminal approach as Dimorphos increasingly fills the field of view. The final five-and-a-half minutes of images leading up to the DART spacecraft’s intentional collision with asteroid Dimorphos. The DART spacecraft streamed these images from its DRACO camera back to Earth in real time as it approached the asteroid. This replay movie is 10 times faster than reality, except for the last six images, which are shown at the same rate that the spacecraft returned them. Both Didymos and its moonlet Dimorphos are visible at the start of the movie. At the end, Dimorphos fills the field of view. The final image in the movie shows a patch of Dimorphos that is 51 feet 16 meters) across. DART’s impact occurred during transmission of the final image to Earth, resulting in a partial picture at the end of this movie. Didymos is roughly 2,500 feet (780 meters) in diameter; Dimorphos is about 525 feet (160 meters) in length. Asteroid Didymos (top left) and its moonlet, Dimorphos, about 2.5 minutes before the impact of NASA’s DART spacecraft. The image was taken by the on board DRACO imager from a distance of 570 miles (920 kilometers). This image was the last to contain a complete view of both asteroids. Didymos is roughly 2,500 feet (780 meters) in diameter; Dimorphos is about 525 feet (160 meters) in length. Didymos’ and Dimorphos’ north is toward the top of the image. Asteroid moonlet Dimorphos as seen by the DART spacecraft 11 seconds before impact. DART’s on board DRACO imager captured this image from a distance of 42 miles (68 kilometers). This image was the last to contain all of Dimorphos in the field of view. Dimorphos is roughly 525 feet (160 meters) in length. Dimorphos’ north is toward the top of the image. The last complete image of asteroid moonlet Dimorphos, taken by the DRACO imager on NASA’s DART mission from ~7 miles (12 kilometers) from the asteroid and 2 seconds before impact. The image shows a patch of the asteroid that is 100 feet (31 meters) across. Dimorphos’ north is toward the top of the image. DART’s final look at the asteroid moonlet Dimorphos before impact. The spacecraft’s on board DRACO imager took this final image ~4 miles (~6 kilometers) from the asteroid and only 1 second before impact. DART’s impact occurred during transmission of the image to Earth, resulting in a partial picture. The image shows a patch of the asteroid that is 51 feet 16 meters) across. Dimorphos’ north is toward the top of the image.


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