Q. Researchers have found evidence that interstellar dust grains align with magnetic fields in the Milky Way. Interstellar dust grains are composed of which materials?
Answer: Silicates and carbonaceous material
Notes: Scientists have found that tiny interstellar dust grains act as storytellers of the universe. A team led by the Indian Institute of Astrophysics (IIA), Bengaluru, provided the strongest observational evidence of how these dust grains align with magnetic fields in the Milky Way. Dust grains are a few micrometers in size, made of silicates and carbonaceous material, and exist throughout the interstellar medium. They play a key role in star and planet formation and cause starlight polarization detected since 1949.