Science TechnologySaturday, 14 March 2026·https://testbook.com/current-affairs/14-march-2026-daily-current-affairs
NASA DART mission changed the orbit of Dimorphos and the Didymos system
New research says NASA’s DART impact in September 2022 measurably altered the orbit of the asteroid system Didymos-Dimorphos.
Key highlights
Direct fact
In March 2026, new research confirmed that NASA’s DART mission, which impacted Dimorphos in September 2022, measurably altered the orbit of the Didymos-Dimorphos asteroid system around the Sun.
Key specifics
- The DART impact occurred in September 2022.
- Dimorphos is the moonlet of the larger asteroid Didymos.
- The binary system’s 770-day orbital period around the Sun changed by a fraction of a second.
- This was the first time a human-made object measurably altered the path of a celestial body.
- DART stands for Double Asteroid Redirection Test.
Exam lens
Question type: space science and planetary defence; remember September 2022, Dimorphos, Didymos, 770-day orbit, and the first human-made orbital alteration. TNPSC may ask what DART stands for and why the mission matters.