Next Big Future
Brian Wang
June 27, 2018
The European Space Agency (ESA) and NASA will each send a mission to the same binary asteroid to test if they can impact it alter its orbit.
In 2022, a NASA mission called Double Asteroid Redirection Test (DART) will collide with Didymoon when the system will come 11 million kilometers close to Earth. The DART spacecraft will achieve the kinetic impact by deliberately crashing itself into the moonlet at a speed of approximately 6 km/s, with the aid of an onboard camera and sophisticated autonomous navigation software. The collision will change the speed of the moonlet in its orbit around the main body by a fraction of one percent, enough to be measured using telescopes on Earth.
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https://www.nextbigfuture.com/2018/06/asteroid-day-june-30-and-nasa-esa-collaborating-on-2022-2026-double-asteroid-missions-html.html#more-146074
