Space dust is a term that describes the cosmic dust that exists in space. It is also known as interstellar dust, galactic dust, or cosmic debris. These terms all refer to the same type of dust and debris that astronauts and telescopes observe in the universe. Another synonym for space dust is cosmic sand, which describes the tiny particles that make up the dust. Other synonyms include cosmic grit, interstellar grains, and cosmic debris. While space dust may seem insignificant, it plays an important role in cosmic evolution and the formation of stars and planets. Regardless of the name, there is no denying the wonder and fascination that surrounds these tiny cosmic particles.