Broadly speaking, interstellar extinction is strongest at short wavelengths, generally observed by using techniques from spectroscopy.
Dǎɣ almaɣna wasisaharan, asimiki wan interstellaire eqal wogaran aśihu dǎɣ nalwaqan wi tizigrit ondetan, atamosan atiwakyadan dǎɣ tilalt ən tekaniten tən spectroscopie.