Dart Mission Succeeded In Altering Orbit Of Target Asteroid, Claims NASA

The celestial target of the DART flight was an egg-shaped asteroid named Dimorphos. The asteroid was roughly the size of a football stadium.

Asteroid Dimorphos and NASA?s DART spacecraft

Source : PTI

New Delhi: The National Aeronautics and Space Administration on Tuesday, claimed that NASA’s spacecraft that deliberately crashed into an asteroid in September succeeded in nudging the rocky moonlet out of its natural orbit, as reported by the news agency Reuters.

“The spacecraft that NASA deliberately crashed into an asteroid last month succeeded in nudging the rocky moonlet out of its natural orbit -- the first time humanity has altered the motion of a celestial body,” NASA's chief announced on Tuesday, Reuters reported.

"This is a watershed moment for planetary defense and a watershed moment for humanity," NASA chief Bill Nelson said in announcing the results.

The suicide test flight of the DART spacecraft on Sept. 26 achieved its primary objective: changing the direction of an asteroid through sheer kinetic force, according to the findings of telescope observations.

The DART mission also marked the world's first test of a planetary defense system designed to prevent a potential doomsday meteorite collision with Earth.

The celestial target of the DART flight was an egg-shaped asteroid named Dimorphos as reported by Reuters. The asteroid was roughly the size of a football stadium. It was orbiting a parent asteroid about five times bigger called Didymos once every 11 hours, 55 minutes.

The aim was to fly the DART impactor vehicle - no bigger than a vending machine - directly into Dimorphos at about 14,000 miles per hour (22,531 kph), creating enough force to shift the moonlet's orbital track closer to its larger companion.

A comparison of pre-and post-impact astronomical measurements of the Dimorphos orbit around Didymos showed a 32-minute shortening of its trajectory, proving the exercise as a viable technique to deflect an asteroid from a collision course with Earth if such an asteroid were ever discovered.

“According to the predictions made by APL scientists, the DART impact would shorten the orbital path of Dimorphos by at least 10 minutes. They would have considered a change as little as 73 seconds a success,” the scientists said.

“Neither of the two asteroids involved in the test nor DART, short for Double Asteroid Redirection Test, posed any threat to Earth,” NASA scientists said.

(With Inputs From Reuters)