Dictionary of Space Concepts

Source: https://dart.jhuapl.edu/Gallery/media/graphics/lg/DART-infographic_v4.jpg

Definition: 

A mission planned by NASA to test a method of planetary defense by redirecting an asteroid, which could hypothetically pose a threat to Earth, by means of the DART spacecraft deliberately crashing itself into this asteroid.

The DART spacecraft was built by Johns Hopkins Applied Physics Laboratory and was launched on November 23, 2021 at Vandenberg Space Force Base in California. Its target is the binary near-Earth asteroid Didymos (780 m across) and its secondary body, or “moonlet”, Dimorphos (163 m across). This binary asteroid is situated roughly 11 million kilometers from the Earth and does not pose a threat to the planet, but corresponds to the size of a potentially hazardous celestial body (140 m or more in diameter). As a result of the planned collision at the end of September 2022, the orbit of Dimorphos will change, this change will be observed and measured using telescopes on Earth and the data will be used to predict effectiveness of kinetic impact for the purpose of asteroid deflection as a planetary defense method.

(https://blogs.nasa.gov/dart/2021/11/24/nasa-spacex-launch-dart-first-planetary-defense-test-mission/)

Etymology:

DART stands for “Double Asteroid Redirection Test”

Translations:

• French: Test de déviation d'un astéroïde double – [tɛst də de.vja.sjɔ̃ dœ̃ as.te.ʁɔ.id dubl]
  
• German: Doppel-Asteroiden-Umleitungs-Test – [ˈdɔpl̩ asteʁoˈiːdn̩ ˈʊmˌlaɪ̯tʊŋs tɛst]
  
• Polish: – Misja DART (test przekierowania podwójnej asteroidy)
• Russian: испытания перенаправления двойного астероида – [ɪspɨˈtanʲɪjɐ pʲɪrʲɪnəprɐˈvlʲenʲɪɪ̯ɐ dvɐjˈnovə ɐsʲtʲɪˈroɪdə]
  
• Swedish:– []

Links to Videos/Articles:

https://www.youtube.com/watch?v=hbL07cZUEMU

More detailed information on the project:

https://www.nasa.gov/planetarydefense/dart

https://dart.jhuapl.edu/