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Double Asteroid Redirection Test Mission
March 17 , 2026
14 hrs 0 min
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- A study showed that NASA’s Double Asteroid Redirection Test (DART) mission changed the orbit of an entire asteroid system.
- The mission targeted Dimorphos, a small asteroid orbiting Didymos in a binary asteroid system.
- In September 2022, a spacecraft was deliberately crashed into Dimorphos using the kinetic impactor technique.
- After the impact, Dimorphos’ orbital period around Didymos reduced by about 33 minutes.
- The collision also slightly changed the orbit of the Didymos–Dimorphos system around the Sun, demonstrating a method of planetary defence.
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